21331330280

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{1108697}}^1$

素因数の和:1108758

約数の個数: 64

約数和(自身を含む): 53084460240

約数和(自身を除く): 31753129960

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 37, 40, 52, 65, 74, 104, 130, 148, 185, 260, 296, 370, 481, 520, 740, 962, 1480, 1924, 2405, 3848, 4810, 9620, 19240, 1108697, 2217394, 4434788, 5543485, 8869576, 11086970, 14413061, 22173940, 28826122, 41021789, 44347880, 57652244, 72065305, 82043578, 115304488, 144130610, 164087156, 205108945, 288261220, 328174312, 410217890, 533283257, 576522440, 820435780, 1066566514, 1640871560, 2133133028, 2666416285, 4266266056, 5332832570, 10665665140, 21331330280]

約数ペア:

[(1, 21331330280), (2, 10665665140), (4, 5332832570), (5, 4266266056), (8, 2666416285), (10, 2133133028), (13, 1640871560), (20, 1066566514), (26, 820435780), (37, 576522440), (40, 533283257), (52, 410217890), (65, 328174312), (74, 288261220), (104, 205108945), (130, 164087156), (148, 144130610), (185, 115304488), (260, 82043578), (296, 72065305), (370, 57652244), (481, 44347880), (520, 41021789), (740, 28826122), (962, 22173940), (1480, 14413061), (1924, 11086970), (2405, 8869576), (3848, 5543485), (4810, 4434788), (9620, 2217394), (19240, 1108697)]