19398680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{2389}}^1$

素因数の和:2436

約数の個数: 64

約数和(自身を含む): 51624000

約数和(自身を除く): 32225320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 29, 35, 40, 56, 58, 70, 116, 140, 145, 203, 232, 280, 290, 406, 580, 812, 1015, 1160, 1624, 2030, 2389, 4060, 4778, 8120, 9556, 11945, 16723, 19112, 23890, 33446, 47780, 66892, 69281, 83615, 95560, 133784, 138562, 167230, 277124, 334460, 346405, 484967, 554248, 668920, 692810, 969934, 1385620, 1939868, 2424835, 2771240, 3879736, 4849670, 9699340, 19398680]

約数ペア:

[(1, 19398680), (2, 9699340), (4, 4849670), (5, 3879736), (7, 2771240), (8, 2424835), (10, 1939868), (14, 1385620), (20, 969934), (28, 692810), (29, 668920), (35, 554248), (40, 484967), (56, 346405), (58, 334460), (70, 277124), (116, 167230), (140, 138562), (145, 133784), (203, 95560), (232, 83615), (280, 69281), (290, 66892), (406, 47780), (580, 33446), (812, 23890), (1015, 19112), (1160, 16723), (1624, 11945), (2030, 9556), (2389, 8120), (4060, 4778)]