78328880

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{2293}}^1$

素因数の和:2374

約数の個数: 80

約数和(自身を含む): 211635264

約数和(自身を除く): 133306384

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 61, 70, 80, 112, 122, 140, 244, 280, 305, 427, 488, 560, 610, 854, 976, 1220, 1708, 2135, 2293, 2440, 3416, 4270, 4586, 4880, 6832, 8540, 9172, 11465, 16051, 17080, 18344, 22930, 32102, 34160, 36688, 45860, 64204, 80255, 91720, 128408, 139873, 160510, 183440, 256816, 279746, 321020, 559492, 642040, 699365, 979111, 1118984, 1284080, 1398730, 1958222, 2237968, 2797460, 3916444, 4895555, 5594920, 7832888, 9791110, 11189840, 15665776, 19582220, 39164440, 78328880]

約数ペア:

[(1, 78328880), (2, 39164440), (4, 19582220), (5, 15665776), (7, 11189840), (8, 9791110), (10, 7832888), (14, 5594920), (16, 4895555), (20, 3916444), (28, 2797460), (35, 2237968), (40, 1958222), (56, 1398730), (61, 1284080), (70, 1118984), (80, 979111), (112, 699365), (122, 642040), (140, 559492), (244, 321020), (280, 279746), (305, 256816), (427, 183440), (488, 160510), (560, 139873), (610, 128408), (854, 91720), (976, 80255), (1220, 64204), (1708, 45860), (2135, 36688), (2293, 34160), (2440, 32102), (3416, 22930), (4270, 18344), (4586, 17080), (4880, 16051), (6832, 11465), (8540, 9172)]