80640040

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^2\times {\mathrm{79}}^1\times {\mathrm{151}}^1$

素因数の和:267

約数の個数: 96

約数和(自身を含む): 200275200

約数和(自身を除く): 119635160

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 79, 104, 130, 151, 158, 169, 260, 302, 316, 338, 395, 520, 604, 632, 676, 755, 790, 845, 1027, 1208, 1352, 1510, 1580, 1690, 1963, 2054, 3020, 3160, 3380, 3926, 4108, 5135, 6040, 6760, 7852, 8216, 9815, 10270, 11929, 13351, 15704, 19630, 20540, 23858, 25519, 26702, 39260, 41080, 47716, 51038, 53404, 59645, 66755, 78520, 95432, 102076, 106808, 119290, 127595, 133510, 155077, 204152, 238580, 255190, 267020, 310154, 477160, 510380, 534040, 620308, 775385, 1020760, 1240616, 1550770, 2016001, 3101540, 4032002, 6203080, 8064004, 10080005, 16128008, 20160010, 40320020, 80640040]

約数ペア:

[(1, 80640040), (2, 40320020), (4, 20160010), (5, 16128008), (8, 10080005), (10, 8064004), (13, 6203080), (20, 4032002), (26, 3101540), (40, 2016001), (52, 1550770), (65, 1240616), (79, 1020760), (104, 775385), (130, 620308), (151, 534040), (158, 510380), (169, 477160), (260, 310154), (302, 267020), (316, 255190), (338, 238580), (395, 204152), (520, 155077), (604, 133510), (632, 127595), (676, 119290), (755, 106808), (790, 102076), (845, 95432), (1027, 78520), (1208, 66755), (1352, 59645), (1510, 53404), (1580, 51038), (1690, 47716), (1963, 41080), (2054, 39260), (3020, 26702), (3160, 25519), (3380, 23858), (3926, 20540), (4108, 19630), (5135, 15704), (6040, 13351), (6760, 11929), (7852, 10270), (8216, 9815)]