787887568

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{1721}}^1$

素因数の和:1844

約数の個数: 80

約数和(自身を含む): 1721889792

約数和(自身を除く): 934002224

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 52, 62, 71, 104, 124, 142, 208, 248, 284, 403, 496, 568, 806, 923, 1136, 1612, 1721, 1846, 2201, 3224, 3442, 3692, 4402, 6448, 6884, 7384, 8804, 13768, 14768, 17608, 22373, 27536, 28613, 35216, 44746, 53351, 57226, 89492, 106702, 114452, 122191, 178984, 213404, 228904, 244382, 357968, 426808, 457808, 488764, 693563, 853616, 977528, 1387126, 1588483, 1955056, 2774252, 3176966, 3787921, 5548504, 6353932, 7575842, 11097008, 12707864, 15151684, 25415728, 30303368, 49242973, 60606736, 98485946, 196971892, 393943784, 787887568]

約数ペア:

[(1, 787887568), (2, 393943784), (4, 196971892), (8, 98485946), (13, 60606736), (16, 49242973), (26, 30303368), (31, 25415728), (52, 15151684), (62, 12707864), (71, 11097008), (104, 7575842), (124, 6353932), (142, 5548504), (208, 3787921), (248, 3176966), (284, 2774252), (403, 1955056), (496, 1588483), (568, 1387126), (806, 977528), (923, 853616), (1136, 693563), (1612, 488764), (1721, 457808), (1846, 426808), (2201, 357968), (3224, 244382), (3442, 228904), (3692, 213404), (4402, 178984), (6448, 122191), (6884, 114452), (7384, 106702), (8804, 89492), (13768, 57226), (14768, 53351), (17608, 44746), (22373, 35216), (27536, 28613)]