7980640

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1609}}^1$

素因数の和:1655

約数の個数: 48

約数和(自身を含む): 19474560

約数和(自身を除く): 11493920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 80, 124, 155, 160, 248, 310, 496, 620, 992, 1240, 1609, 2480, 3218, 4960, 6436, 8045, 12872, 16090, 25744, 32180, 49879, 51488, 64360, 99758, 128720, 199516, 249395, 257440, 399032, 498790, 798064, 997580, 1596128, 1995160, 3990320, 7980640]

約数ペア:

[(1, 7980640), (2, 3990320), (4, 1995160), (5, 1596128), (8, 997580), (10, 798064), (16, 498790), (20, 399032), (31, 257440), (32, 249395), (40, 199516), (62, 128720), (80, 99758), (124, 64360), (155, 51488), (160, 49879), (248, 32180), (310, 25744), (496, 16090), (620, 12872), (992, 8045), (1240, 6436), (1609, 4960), (2480, 3218)]