21409830

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{631}}^1$

素因数の和:686

約数の個数: 96

約数和(自身を含む): 62112960

約数和(自身を除く): 40703130

約数列:

[1, 2, 3, 5, 6, 9, 10, 13, 15, 18, 26, 29, 30, 39, 45, 58, 65, 78, 87, 90, 117, 130, 145, 174, 195, 234, 261, 290, 377, 390, 435, 522, 585, 631, 754, 870, 1131, 1170, 1262, 1305, 1885, 1893, 2262, 2610, 3155, 3393, 3770, 3786, 5655, 5679, 6310, 6786, 8203, 9465, 11310, 11358, 16406, 16965, 18299, 18930, 24609, 28395, 33930, 36598, 41015, 49218, 54897, 56790, 73827, 82030, 91495, 109794, 123045, 147654, 164691, 182990, 237887, 246090, 274485, 329382, 369135, 475774, 548970, 713661, 738270, 823455, 1189435, 1427322, 1646910, 2140983, 2378870, 3568305, 4281966, 7136610, 10704915, 21409830]

約数ペア:

[(1, 21409830), (2, 10704915), (3, 7136610), (5, 4281966), (6, 3568305), (9, 2378870), (10, 2140983), (13, 1646910), (15, 1427322), (18, 1189435), (26, 823455), (29, 738270), (30, 713661), (39, 548970), (45, 475774), (58, 369135), (65, 329382), (78, 274485), (87, 246090), (90, 237887), (117, 182990), (130, 164691), (145, 147654), (174, 123045), (195, 109794), (234, 91495), (261, 82030), (290, 73827), (377, 56790), (390, 54897), (435, 49218), (522, 41015), (585, 36598), (631, 33930), (754, 28395), (870, 24609), (1131, 18930), (1170, 18299), (1262, 16965), (1305, 16406), (1885, 11358), (1893, 11310), (2262, 9465), (2610, 8203), (3155, 6786), (3393, 6310), (3770, 5679), (3786, 5655)]