78875680

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^2\times {\mathrm{2917}}^1$

素因数の和:2958

約数の個数: 72

約数和(自身を含む): 201849732

約数和(自身を除く): 122974052

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 169, 208, 260, 338, 416, 520, 676, 845, 1040, 1352, 1690, 2080, 2704, 2917, 3380, 5408, 5834, 6760, 11668, 13520, 14585, 23336, 27040, 29170, 37921, 46672, 58340, 75842, 93344, 116680, 151684, 189605, 233360, 303368, 379210, 466720, 492973, 606736, 758420, 985946, 1213472, 1516840, 1971892, 2464865, 3033680, 3943784, 4929730, 6067360, 7887568, 9859460, 15775136, 19718920, 39437840, 78875680]

約数ペア:

[(1, 78875680), (2, 39437840), (4, 19718920), (5, 15775136), (8, 9859460), (10, 7887568), (13, 6067360), (16, 4929730), (20, 3943784), (26, 3033680), (32, 2464865), (40, 1971892), (52, 1516840), (65, 1213472), (80, 985946), (104, 758420), (130, 606736), (160, 492973), (169, 466720), (208, 379210), (260, 303368), (338, 233360), (416, 189605), (520, 151684), (676, 116680), (845, 93344), (1040, 75842), (1352, 58340), (1690, 46672), (2080, 37921), (2704, 29170), (2917, 27040), (3380, 23336), (5408, 14585), (5834, 13520), (6760, 11668)]