71648680

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{1657}}^1$

素因数の和:1738

約数の個数: 64

約数和(自身を含む): 171901440

約数和(自身を除く): 100252760

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 47, 92, 94, 115, 184, 188, 230, 235, 376, 460, 470, 920, 940, 1081, 1657, 1880, 2162, 3314, 4324, 5405, 6628, 8285, 8648, 10810, 13256, 16570, 21620, 33140, 38111, 43240, 66280, 76222, 77879, 152444, 155758, 190555, 304888, 311516, 381110, 389395, 623032, 762220, 778790, 1524440, 1557580, 1791217, 3115160, 3582434, 7164868, 8956085, 14329736, 17912170, 35824340, 71648680]

約数ペア:

[(1, 71648680), (2, 35824340), (4, 17912170), (5, 14329736), (8, 8956085), (10, 7164868), (20, 3582434), (23, 3115160), (40, 1791217), (46, 1557580), (47, 1524440), (92, 778790), (94, 762220), (115, 623032), (184, 389395), (188, 381110), (230, 311516), (235, 304888), (376, 190555), (460, 155758), (470, 152444), (920, 77879), (940, 76222), (1081, 66280), (1657, 43240), (1880, 38111), (2162, 33140), (3314, 21620), (4324, 16570), (5405, 13256), (6628, 10810), (8285, 8648)]