20019480

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{313}}^1$

素因数の和:381

約数の個数: 128

約数和(自身を含む): 66467520

約数和(自身を除く): 46448040

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 41, 52, 60, 65, 78, 82, 104, 120, 123, 130, 156, 164, 195, 205, 246, 260, 312, 313, 328, 390, 410, 492, 520, 533, 615, 626, 780, 820, 939, 984, 1066, 1230, 1252, 1560, 1565, 1599, 1640, 1878, 2132, 2460, 2504, 2665, 3130, 3198, 3756, 4069, 4264, 4695, 4920, 5330, 6260, 6396, 7512, 7995, 8138, 9390, 10660, 12207, 12520, 12792, 12833, 15990, 16276, 18780, 20345, 21320, 24414, 25666, 31980, 32552, 37560, 38499, 40690, 48828, 51332, 61035, 63960, 64165, 76998, 81380, 97656, 102664, 122070, 128330, 153996, 162760, 166829, 192495, 244140, 256660, 307992, 333658, 384990, 488280, 500487, 513320, 667316, 769980, 834145, 1000974, 1334632, 1539960, 1668290, 2001948, 2502435, 3336580, 4003896, 5004870, 6673160, 10009740, 20019480]

約数ペア:

[(1, 20019480), (2, 10009740), (3, 6673160), (4, 5004870), (5, 4003896), (6, 3336580), (8, 2502435), (10, 2001948), (12, 1668290), (13, 1539960), (15, 1334632), (20, 1000974), (24, 834145), (26, 769980), (30, 667316), (39, 513320), (40, 500487), (41, 488280), (52, 384990), (60, 333658), (65, 307992), (78, 256660), (82, 244140), (104, 192495), (120, 166829), (123, 162760), (130, 153996), (156, 128330), (164, 122070), (195, 102664), (205, 97656), (246, 81380), (260, 76998), (312, 64165), (313, 63960), (328, 61035), (390, 51332), (410, 48828), (492, 40690), (520, 38499), (533, 37560), (615, 32552), (626, 31980), (780, 25666), (820, 24414), (939, 21320), (984, 20345), (1066, 18780), (1230, 16276), (1252, 15990), (1560, 12833), (1565, 12792), (1599, 12520), (1640, 12207), (1878, 10660), (2132, 9390), (2460, 8138), (2504, 7995), (2665, 7512), (3130, 6396), (3198, 6260), (3756, 5330), (4069, 4920), (4264, 4695)]