21618780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{197}}^1$

素因数の和:299

約数の個数: 96

約数和(自身を含む): 63866880

約数和(自身を除く): 42248100

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 31, 59, 60, 62, 93, 118, 124, 155, 177, 186, 197, 236, 295, 310, 354, 372, 394, 465, 590, 591, 620, 708, 788, 885, 930, 985, 1180, 1182, 1770, 1829, 1860, 1970, 2364, 2955, 3540, 3658, 3940, 5487, 5910, 6107, 7316, 9145, 10974, 11623, 11820, 12214, 18290, 18321, 21948, 23246, 24428, 27435, 30535, 34869, 36580, 36642, 46492, 54870, 58115, 61070, 69738, 73284, 91605, 109740, 116230, 122140, 139476, 174345, 183210, 232460, 348690, 360313, 366420, 697380, 720626, 1080939, 1441252, 1801565, 2161878, 3603130, 4323756, 5404695, 7206260, 10809390, 21618780]

約数ペア:

[(1, 21618780), (2, 10809390), (3, 7206260), (4, 5404695), (5, 4323756), (6, 3603130), (10, 2161878), (12, 1801565), (15, 1441252), (20, 1080939), (30, 720626), (31, 697380), (59, 366420), (60, 360313), (62, 348690), (93, 232460), (118, 183210), (124, 174345), (155, 139476), (177, 122140), (186, 116230), (197, 109740), (236, 91605), (295, 73284), (310, 69738), (354, 61070), (372, 58115), (394, 54870), (465, 46492), (590, 36642), (591, 36580), (620, 34869), (708, 30535), (788, 27435), (885, 24428), (930, 23246), (985, 21948), (1180, 18321), (1182, 18290), (1770, 12214), (1829, 11820), (1860, 11623), (1970, 10974), (2364, 9145), (2955, 7316), (3540, 6107), (3658, 5910), (3940, 5487)]