21172140

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{37}}^1$

素因数の和:97

約数の個数: 216

約数和(自身を含む): 76435632

約数和(自身を除く): 55263492

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 17, 18, 20, 22, 30, 33, 34, 36, 37, 44, 45, 51, 55, 60, 66, 68, 74, 85, 90, 99, 102, 110, 111, 132, 148, 153, 165, 170, 180, 185, 187, 198, 204, 220, 222, 255, 289, 306, 330, 333, 340, 370, 374, 396, 407, 444, 495, 510, 555, 561, 578, 612, 629, 660, 666, 740, 748, 765, 814, 867, 935, 990, 1020, 1110, 1122, 1156, 1221, 1258, 1332, 1445, 1530, 1628, 1665, 1683, 1734, 1870, 1887, 1980, 2035, 2220, 2244, 2442, 2516, 2601, 2805, 2890, 3060, 3145, 3179, 3330, 3366, 3468, 3663, 3740, 3774, 4070, 4335, 4884, 5202, 5610, 5661, 5780, 6105, 6290, 6358, 6660, 6732, 6919, 7326, 7548, 8140, 8415, 8670, 9435, 9537, 10404, 10693, 11220, 11322, 12210, 12580, 12716, 13005, 13838, 14652, 15895, 16830, 17340, 18315, 18870, 19074, 20757, 21386, 22644, 24420, 26010, 27676, 28305, 28611, 31790, 32079, 33660, 34595, 36630, 37740, 38148, 41514, 42772, 47685, 52020, 53465, 56610, 57222, 62271, 63580, 64158, 69190, 73260, 83028, 95370, 96237, 103785, 106930, 113220, 114444, 117623, 124542, 128316, 138380, 143055, 160395, 190740, 192474, 207570, 213860, 235246, 249084, 286110, 311355, 320790, 352869, 384948, 415140, 470492, 481185, 572220, 588115, 622710, 641580, 705738, 962370, 1058607, 1176230, 1245420, 1411476, 1764345, 1924740, 2117214, 2352460, 3528690, 4234428, 5293035, 7057380, 10586070, 21172140]

約数ペア:

[(1, 21172140), (2, 10586070), (3, 7057380), (4, 5293035), (5, 4234428), (6, 3528690), (9, 2352460), (10, 2117214), (11, 1924740), (12, 1764345), (15, 1411476), (17, 1245420), (18, 1176230), (20, 1058607), (22, 962370), (30, 705738), (33, 641580), (34, 622710), (36, 588115), (37, 572220), (44, 481185), (45, 470492), (51, 415140), (55, 384948), (60, 352869), (66, 320790), (68, 311355), (74, 286110), (85, 249084), (90, 235246), (99, 213860), (102, 207570), (110, 192474), (111, 190740), (132, 160395), (148, 143055), (153, 138380), (165, 128316), (170, 124542), (180, 117623), (185, 114444), (187, 113220), (198, 106930), (204, 103785), (220, 96237), (222, 95370), (255, 83028), (289, 73260), (306, 69190), (330, 64158), (333, 63580), (340, 62271), (370, 57222), (374, 56610), (396, 53465), (407, 52020), (444, 47685), (495, 42772), (510, 41514), (555, 38148), (561, 37740), (578, 36630), (612, 34595), (629, 33660), (660, 32079), (666, 31790), (740, 28611), (748, 28305), (765, 27676), (814, 26010), (867, 24420), (935, 22644), (990, 21386), (1020, 20757), (1110, 19074), (1122, 18870), (1156, 18315), (1221, 17340), (1258, 16830), (1332, 15895), (1445, 14652), (1530, 13838), (1628, 13005), (1665, 12716), (1683, 12580), (1734, 12210), (1870, 11322), (1887, 11220), (1980, 10693), (2035, 10404), (2220, 9537), (2244, 9435), (2442, 8670), (2516, 8415), (2601, 8140), (2805, 7548), (2890, 7326), (3060, 6919), (3145, 6732), (3179, 6660), (3330, 6358), (3366, 6290), (3468, 6105), (3663, 5780), (3740, 5661), (3774, 5610), (4070, 5202), (4335, 4884)]