78716840

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{32261}}^1$

素因数の和:32333

約数の個数: 32

約数和(自身を含む): 180021960

約数和(自身を除く): 101305120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 32261, 64522, 129044, 161305, 258088, 322610, 645220, 1290440, 1967921, 3935842, 7871684, 9839605, 15743368, 19679210, 39358420, 78716840]

約数ペア:

[(1, 78716840), (2, 39358420), (4, 19679210), (5, 15743368), (8, 9839605), (10, 7871684), (20, 3935842), (40, 1967921), (61, 1290440), (122, 645220), (244, 322610), (305, 258088), (488, 161305), (610, 129044), (1220, 64522), (2440, 32261)]