21553620

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{113}}^1$

素因数の和:170

約数の個数: 144

約数和(自身を含む): 70555968

約数和(自身を除く): 49002348

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 17, 20, 22, 30, 33, 34, 44, 51, 55, 60, 66, 68, 85, 102, 110, 113, 132, 165, 170, 187, 204, 220, 226, 255, 289, 330, 339, 340, 374, 452, 510, 561, 565, 578, 660, 678, 748, 867, 935, 1020, 1122, 1130, 1156, 1243, 1356, 1445, 1695, 1734, 1870, 1921, 2244, 2260, 2486, 2805, 2890, 3179, 3390, 3468, 3729, 3740, 3842, 4335, 4972, 5610, 5763, 5780, 6215, 6358, 6780, 7458, 7684, 8670, 9537, 9605, 11220, 11526, 12430, 12716, 14916, 15895, 17340, 18645, 19074, 19210, 21131, 23052, 24860, 28815, 31790, 32657, 37290, 38148, 38420, 42262, 47685, 57630, 63393, 63580, 65314, 74580, 84524, 95370, 97971, 105655, 115260, 126786, 130628, 163285, 190740, 195942, 211310, 253572, 316965, 326570, 359227, 391884, 422620, 489855, 633930, 653140, 718454, 979710, 1077681, 1267860, 1436908, 1796135, 1959420, 2155362, 3592270, 4310724, 5388405, 7184540, 10776810, 21553620]

約数ペア:

[(1, 21553620), (2, 10776810), (3, 7184540), (4, 5388405), (5, 4310724), (6, 3592270), (10, 2155362), (11, 1959420), (12, 1796135), (15, 1436908), (17, 1267860), (20, 1077681), (22, 979710), (30, 718454), (33, 653140), (34, 633930), (44, 489855), (51, 422620), (55, 391884), (60, 359227), (66, 326570), (68, 316965), (85, 253572), (102, 211310), (110, 195942), (113, 190740), (132, 163285), (165, 130628), (170, 126786), (187, 115260), (204, 105655), (220, 97971), (226, 95370), (255, 84524), (289, 74580), (330, 65314), (339, 63580), (340, 63393), (374, 57630), (452, 47685), (510, 42262), (561, 38420), (565, 38148), (578, 37290), (660, 32657), (678, 31790), (748, 28815), (867, 24860), (935, 23052), (1020, 21131), (1122, 19210), (1130, 19074), (1156, 18645), (1243, 17340), (1356, 15895), (1445, 14916), (1695, 12716), (1734, 12430), (1870, 11526), (1921, 11220), (2244, 9605), (2260, 9537), (2486, 8670), (2805, 7684), (2890, 7458), (3179, 6780), (3390, 6358), (3468, 6215), (3729, 5780), (3740, 5763), (3842, 5610), (4335, 4972)]