71219980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{1109}}^1$

素因数の和:1163

約数の個数: 72

約数和(自身を含む): 170629200

約数和(自身を除く): 99409220

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 169, 190, 247, 260, 338, 380, 494, 676, 845, 988, 1109, 1235, 1690, 2218, 2470, 3211, 3380, 4436, 4940, 5545, 6422, 11090, 12844, 14417, 16055, 21071, 22180, 28834, 32110, 42142, 57668, 64220, 72085, 84284, 105355, 144170, 187421, 210710, 273923, 288340, 374842, 421420, 547846, 749684, 937105, 1095692, 1369615, 1874210, 2739230, 3560999, 3748420, 5478460, 7121998, 14243996, 17804995, 35609990, 71219980]

約数ペア:

[(1, 71219980), (2, 35609990), (4, 17804995), (5, 14243996), (10, 7121998), (13, 5478460), (19, 3748420), (20, 3560999), (26, 2739230), (38, 1874210), (52, 1369615), (65, 1095692), (76, 937105), (95, 749684), (130, 547846), (169, 421420), (190, 374842), (247, 288340), (260, 273923), (338, 210710), (380, 187421), (494, 144170), (676, 105355), (845, 84284), (988, 72085), (1109, 64220), (1235, 57668), (1690, 42142), (2218, 32110), (2470, 28834), (3211, 22180), (3380, 21071), (4436, 16055), (4940, 14417), (5545, 12844), (6422, 11090)]