81116880

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{25999}}^1$

素因数の和:26028

約数の個数: 80

約数和(自身を含む): 270816000

約数和(自身を除く): 189699120

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 78, 80, 104, 120, 130, 156, 195, 208, 240, 260, 312, 390, 520, 624, 780, 1040, 1560, 3120, 25999, 51998, 77997, 103996, 129995, 155994, 207992, 259990, 311988, 337987, 389985, 415984, 519980, 623976, 675974, 779970, 1013961, 1039960, 1247952, 1351948, 1559940, 1689935, 2027922, 2079920, 2703896, 3119880, 3379870, 4055844, 5069805, 5407792, 6239760, 6759740, 8111688, 10139610, 13519480, 16223376, 20279220, 27038960, 40558440, 81116880]

約数ペア:

[(1, 81116880), (2, 40558440), (3, 27038960), (4, 20279220), (5, 16223376), (6, 13519480), (8, 10139610), (10, 8111688), (12, 6759740), (13, 6239760), (15, 5407792), (16, 5069805), (20, 4055844), (24, 3379870), (26, 3119880), (30, 2703896), (39, 2079920), (40, 2027922), (48, 1689935), (52, 1559940), (60, 1351948), (65, 1247952), (78, 1039960), (80, 1013961), (104, 779970), (120, 675974), (130, 623976), (156, 519980), (195, 415984), (208, 389985), (240, 337987), (260, 311988), (312, 259990), (390, 207992), (520, 155994), (624, 129995), (780, 103996), (1040, 77997), (1560, 51998), (3120, 25999)]