19990620

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{8543}}^1$

素因数の和:8571

約数の個数: 72

約数和(自身を含む): 65310336

約数和(自身を除く): 45319716

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 65, 78, 90, 117, 130, 156, 180, 195, 234, 260, 390, 468, 585, 780, 1170, 2340, 8543, 17086, 25629, 34172, 42715, 51258, 76887, 85430, 102516, 111059, 128145, 153774, 170860, 222118, 256290, 307548, 333177, 384435, 444236, 512580, 555295, 666354, 768870, 999531, 1110590, 1332708, 1537740, 1665885, 1999062, 2221180, 3331770, 3998124, 4997655, 6663540, 9995310, 19990620]

約数ペア:

[(1, 19990620), (2, 9995310), (3, 6663540), (4, 4997655), (5, 3998124), (6, 3331770), (9, 2221180), (10, 1999062), (12, 1665885), (13, 1537740), (15, 1332708), (18, 1110590), (20, 999531), (26, 768870), (30, 666354), (36, 555295), (39, 512580), (45, 444236), (52, 384435), (60, 333177), (65, 307548), (78, 256290), (90, 222118), (117, 170860), (130, 153774), (156, 128145), (180, 111059), (195, 102516), (234, 85430), (260, 76887), (390, 51258), (468, 42715), (585, 34172), (780, 25629), (1170, 17086), (2340, 8543)]