18931380

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{1867}}^1$

素因数の和:1905

約数の個数: 72

約数和(自身を含む): 57429792

約数和(自身を除く): 38498412

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 169, 195, 260, 338, 390, 507, 676, 780, 845, 1014, 1690, 1867, 2028, 2535, 3380, 3734, 5070, 5601, 7468, 9335, 10140, 11202, 18670, 22404, 24271, 28005, 37340, 48542, 56010, 72813, 97084, 112020, 121355, 145626, 242710, 291252, 315523, 364065, 485420, 631046, 728130, 946569, 1262092, 1456260, 1577615, 1893138, 3155230, 3786276, 4732845, 6310460, 9465690, 18931380]

約数ペア:

[(1, 18931380), (2, 9465690), (3, 6310460), (4, 4732845), (5, 3786276), (6, 3155230), (10, 1893138), (12, 1577615), (13, 1456260), (15, 1262092), (20, 946569), (26, 728130), (30, 631046), (39, 485420), (52, 364065), (60, 315523), (65, 291252), (78, 242710), (130, 145626), (156, 121355), (169, 112020), (195, 97084), (260, 72813), (338, 56010), (390, 48542), (507, 37340), (676, 28005), (780, 24271), (845, 22404), (1014, 18670), (1690, 11202), (1867, 10140), (2028, 9335), (2535, 7468), (3380, 5601), (3734, 5070)]