71828380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{79}}^1\times {\mathrm{269}}^1$

素因数の和:383

約数の個数: 72

約数和(自身を含む): 166017600

約数和(自身を除く): 94189220

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 79, 130, 158, 169, 260, 269, 316, 338, 395, 538, 676, 790, 845, 1027, 1076, 1345, 1580, 1690, 2054, 2690, 3380, 3497, 4108, 5135, 5380, 6994, 10270, 13351, 13988, 17485, 20540, 21251, 26702, 34970, 42502, 45461, 53404, 66755, 69940, 85004, 90922, 106255, 133510, 181844, 212510, 227305, 267020, 276263, 425020, 454610, 552526, 909220, 1105052, 1381315, 2762630, 3591419, 5525260, 7182838, 14365676, 17957095, 35914190, 71828380]

約数ペア:

[(1, 71828380), (2, 35914190), (4, 17957095), (5, 14365676), (10, 7182838), (13, 5525260), (20, 3591419), (26, 2762630), (52, 1381315), (65, 1105052), (79, 909220), (130, 552526), (158, 454610), (169, 425020), (260, 276263), (269, 267020), (316, 227305), (338, 212510), (395, 181844), (538, 133510), (676, 106255), (790, 90922), (845, 85004), (1027, 69940), (1076, 66755), (1345, 53404), (1580, 45461), (1690, 42502), (2054, 34970), (2690, 26702), (3380, 21251), (3497, 20540), (4108, 17485), (5135, 13988), (5380, 13351), (6994, 10270)]