78906660

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{26839}}^1$

素因数の和:26865

約数の個数: 72

約数和(自身を含む): 257019840

約数和(自身を除く): 178113180

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 26839, 53678, 80517, 107356, 134195, 161034, 187873, 268390, 322068, 375746, 402585, 536780, 563619, 751492, 805170, 939365, 1127238, 1315111, 1610340, 1878730, 2254476, 2630222, 2818095, 3757460, 3945333, 5260444, 5636190, 6575555, 7890666, 11272380, 13151110, 15781332, 19726665, 26302220, 39453330, 78906660]

約数ペア:

[(1, 78906660), (2, 39453330), (3, 26302220), (4, 19726665), (5, 15781332), (6, 13151110), (7, 11272380), (10, 7890666), (12, 6575555), (14, 5636190), (15, 5260444), (20, 3945333), (21, 3757460), (28, 2818095), (30, 2630222), (35, 2254476), (42, 1878730), (49, 1610340), (60, 1315111), (70, 1127238), (84, 939365), (98, 805170), (105, 751492), (140, 563619), (147, 536780), (196, 402585), (210, 375746), (245, 322068), (294, 268390), (420, 187873), (490, 161034), (588, 134195), (735, 107356), (980, 80517), (1470, 53678), (2940, 26839)]