21495760

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1879}}^1$

素因数の和:1916

約数の個数: 80

約数和(自身を含む): 58746240

約数和(自身を除く): 37250480

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 20, 22, 26, 40, 44, 52, 55, 65, 80, 88, 104, 110, 130, 143, 176, 208, 220, 260, 286, 440, 520, 572, 715, 880, 1040, 1144, 1430, 1879, 2288, 2860, 3758, 5720, 7516, 9395, 11440, 15032, 18790, 20669, 24427, 30064, 37580, 41338, 48854, 75160, 82676, 97708, 103345, 122135, 150320, 165352, 195416, 206690, 244270, 268697, 330704, 390832, 413380, 488540, 537394, 826760, 977080, 1074788, 1343485, 1653520, 1954160, 2149576, 2686970, 4299152, 5373940, 10747880, 21495760]

約数ペア:

[(1, 21495760), (2, 10747880), (4, 5373940), (5, 4299152), (8, 2686970), (10, 2149576), (11, 1954160), (13, 1653520), (16, 1343485), (20, 1074788), (22, 977080), (26, 826760), (40, 537394), (44, 488540), (52, 413380), (55, 390832), (65, 330704), (80, 268697), (88, 244270), (104, 206690), (110, 195416), (130, 165352), (143, 150320), (176, 122135), (208, 103345), (220, 97708), (260, 82676), (286, 75160), (440, 48854), (520, 41338), (572, 37580), (715, 30064), (880, 24427), (1040, 20669), (1144, 18790), (1430, 15032), (1879, 11440), (2288, 9395), (2860, 7516), (3758, 5720)]