15878680

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1229}}^1$

素因数の和:1276

約数の個数: 64

約数和(自身を含む): 39852000

約数和(自身を除く): 23973320

約数列:

[1, 2, 4, 5, 8, 10, 17, 19, 20, 34, 38, 40, 68, 76, 85, 95, 136, 152, 170, 190, 323, 340, 380, 646, 680, 760, 1229, 1292, 1615, 2458, 2584, 3230, 4916, 6145, 6460, 9832, 12290, 12920, 20893, 23351, 24580, 41786, 46702, 49160, 83572, 93404, 104465, 116755, 167144, 186808, 208930, 233510, 396967, 417860, 467020, 793934, 835720, 934040, 1587868, 1984835, 3175736, 3969670, 7939340, 15878680]

約数ペア:

[(1, 15878680), (2, 7939340), (4, 3969670), (5, 3175736), (8, 1984835), (10, 1587868), (17, 934040), (19, 835720), (20, 793934), (34, 467020), (38, 417860), (40, 396967), (68, 233510), (76, 208930), (85, 186808), (95, 167144), (136, 116755), (152, 104465), (170, 93404), (190, 83572), (323, 49160), (340, 46702), (380, 41786), (646, 24580), (680, 23351), (760, 20893), (1229, 12920), (1292, 12290), (1615, 9832), (2458, 6460), (2584, 6145), (3230, 4916)]