78920380

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{7321}}^1$

素因数の和:7355

約数の個数: 72

約数和(自身を含む): 210346416

約数和(自身を除く): 131426036

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 49, 55, 70, 77, 98, 110, 140, 154, 196, 220, 245, 308, 385, 490, 539, 770, 980, 1078, 1540, 2156, 2695, 5390, 7321, 10780, 14642, 29284, 36605, 51247, 73210, 80531, 102494, 146420, 161062, 204988, 256235, 322124, 358729, 402655, 512470, 563717, 717458, 805310, 1024940, 1127434, 1434916, 1610620, 1793645, 2254868, 2818585, 3587290, 3946019, 5637170, 7174580, 7892038, 11274340, 15784076, 19730095, 39460190, 78920380]

約数ペア:

[(1, 78920380), (2, 39460190), (4, 19730095), (5, 15784076), (7, 11274340), (10, 7892038), (11, 7174580), (14, 5637170), (20, 3946019), (22, 3587290), (28, 2818585), (35, 2254868), (44, 1793645), (49, 1610620), (55, 1434916), (70, 1127434), (77, 1024940), (98, 805310), (110, 717458), (140, 563717), (154, 512470), (196, 402655), (220, 358729), (245, 322124), (308, 256235), (385, 204988), (490, 161062), (539, 146420), (770, 102494), (980, 80531), (1078, 73210), (1540, 51247), (2156, 36605), (2695, 29284), (5390, 14642), (7321, 10780)]