81554340

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{277}}^1\times {\mathrm{701}}^1$

素因数の和:997

約数の個数: 96

約数和(自身を含む): 262289664

約数和(自身を除く): 180735324

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 277, 420, 554, 701, 831, 1108, 1385, 1402, 1662, 1939, 2103, 2770, 2804, 3324, 3505, 3878, 4155, 4206, 4907, 5540, 5817, 7010, 7756, 8310, 8412, 9695, 9814, 10515, 11634, 14020, 14721, 16620, 19390, 19628, 21030, 23268, 24535, 29085, 29442, 38780, 42060, 49070, 58170, 58884, 73605, 98140, 116340, 147210, 194177, 294420, 388354, 582531, 776708, 970885, 1165062, 1359239, 1941770, 2330124, 2718478, 2912655, 3883540, 4077717, 5436956, 5825310, 6796195, 8155434, 11650620, 13592390, 16310868, 20388585, 27184780, 40777170, 81554340]

約数ペア:

[(1, 81554340), (2, 40777170), (3, 27184780), (4, 20388585), (5, 16310868), (6, 13592390), (7, 11650620), (10, 8155434), (12, 6796195), (14, 5825310), (15, 5436956), (20, 4077717), (21, 3883540), (28, 2912655), (30, 2718478), (35, 2330124), (42, 1941770), (60, 1359239), (70, 1165062), (84, 970885), (105, 776708), (140, 582531), (210, 388354), (277, 294420), (420, 194177), (554, 147210), (701, 116340), (831, 98140), (1108, 73605), (1385, 58884), (1402, 58170), (1662, 49070), (1939, 42060), (2103, 38780), (2770, 29442), (2804, 29085), (3324, 24535), (3505, 23268), (3878, 21030), (4155, 19628), (4206, 19390), (4907, 16620), (5540, 14721), (5817, 14020), (7010, 11634), (7756, 10515), (8310, 9814), (8412, 9695)]