64351820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{79}}^1\times {\mathrm{241}}^1$

素因数の和:355

約数の個数: 72

約数和(自身を含む): 148800960

約数和(自身を除く): 84449140

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 79, 130, 158, 169, 241, 260, 316, 338, 395, 482, 676, 790, 845, 964, 1027, 1205, 1580, 1690, 2054, 2410, 3133, 3380, 4108, 4820, 5135, 6266, 10270, 12532, 13351, 15665, 19039, 20540, 26702, 31330, 38078, 40729, 53404, 62660, 66755, 76156, 81458, 95195, 133510, 162916, 190390, 203645, 247507, 267020, 380780, 407290, 495014, 814580, 990028, 1237535, 2475070, 3217591, 4950140, 6435182, 12870364, 16087955, 32175910, 64351820]

約数ペア:

[(1, 64351820), (2, 32175910), (4, 16087955), (5, 12870364), (10, 6435182), (13, 4950140), (20, 3217591), (26, 2475070), (52, 1237535), (65, 990028), (79, 814580), (130, 495014), (158, 407290), (169, 380780), (241, 267020), (260, 247507), (316, 203645), (338, 190390), (395, 162916), (482, 133510), (676, 95195), (790, 81458), (845, 76156), (964, 66755), (1027, 62660), (1205, 53404), (1580, 40729), (1690, 38078), (2054, 31330), (2410, 26702), (3133, 20540), (3380, 19039), (4108, 15665), (4820, 13351), (5135, 12532), (6266, 10270)]