21851460

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{193}}^1$

素因数の和:262

約数の個数: 144

約数和(自身を含む): 72452016

約数和(自身を除く): 50600556

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 30, 34, 36, 37, 45, 51, 60, 68, 74, 85, 90, 102, 111, 148, 153, 170, 180, 185, 193, 204, 222, 255, 306, 333, 340, 370, 386, 444, 510, 555, 579, 612, 629, 666, 740, 765, 772, 965, 1020, 1110, 1158, 1258, 1332, 1530, 1665, 1737, 1887, 1930, 2220, 2316, 2516, 2895, 3060, 3145, 3281, 3330, 3474, 3774, 3860, 5661, 5790, 6290, 6562, 6660, 6948, 7141, 7548, 8685, 9435, 9843, 11322, 11580, 12580, 13124, 14282, 16405, 17370, 18870, 19686, 21423, 22644, 28305, 28564, 29529, 32810, 34740, 35705, 37740, 39372, 42846, 49215, 56610, 59058, 64269, 65620, 71410, 85692, 98430, 107115, 113220, 118116, 121397, 128538, 142820, 147645, 196860, 214230, 242794, 257076, 295290, 321345, 364191, 428460, 485588, 590580, 606985, 642690, 728382, 1092573, 1213970, 1285380, 1456764, 1820955, 2185146, 2427940, 3641910, 4370292, 5462865, 7283820, 10925730, 21851460]

約数ペア:

[(1, 21851460), (2, 10925730), (3, 7283820), (4, 5462865), (5, 4370292), (6, 3641910), (9, 2427940), (10, 2185146), (12, 1820955), (15, 1456764), (17, 1285380), (18, 1213970), (20, 1092573), (30, 728382), (34, 642690), (36, 606985), (37, 590580), (45, 485588), (51, 428460), (60, 364191), (68, 321345), (74, 295290), (85, 257076), (90, 242794), (102, 214230), (111, 196860), (148, 147645), (153, 142820), (170, 128538), (180, 121397), (185, 118116), (193, 113220), (204, 107115), (222, 98430), (255, 85692), (306, 71410), (333, 65620), (340, 64269), (370, 59058), (386, 56610), (444, 49215), (510, 42846), (555, 39372), (579, 37740), (612, 35705), (629, 34740), (666, 32810), (740, 29529), (765, 28564), (772, 28305), (965, 22644), (1020, 21423), (1110, 19686), (1158, 18870), (1258, 17370), (1332, 16405), (1530, 14282), (1665, 13124), (1737, 12580), (1887, 11580), (1930, 11322), (2220, 9843), (2316, 9435), (2516, 8685), (2895, 7548), (3060, 7141), (3145, 6948), (3281, 6660), (3330, 6562), (3474, 6290), (3774, 5790), (3860, 5661)]