80490880

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{4057}}^1$

素因数の和:4107

約数の個数: 64

約数和(自身を含む): 198679680

約数和(自身を除く): 118188800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 310, 320, 496, 620, 640, 992, 1240, 1984, 2480, 3968, 4057, 4960, 8114, 9920, 16228, 19840, 20285, 32456, 40570, 64912, 81140, 125767, 129824, 162280, 251534, 259648, 324560, 503068, 519296, 628835, 649120, 1006136, 1257670, 1298240, 2012272, 2515340, 2596480, 4024544, 5030680, 8049088, 10061360, 16098176, 20122720, 40245440, 80490880]

約数ペア:

[(1, 80490880), (2, 40245440), (4, 20122720), (5, 16098176), (8, 10061360), (10, 8049088), (16, 5030680), (20, 4024544), (31, 2596480), (32, 2515340), (40, 2012272), (62, 1298240), (64, 1257670), (80, 1006136), (124, 649120), (128, 628835), (155, 519296), (160, 503068), (248, 324560), (310, 259648), (320, 251534), (496, 162280), (620, 129824), (640, 125767), (992, 81140), (1240, 64912), (1984, 40570), (2480, 32456), (3968, 20285), (4057, 19840), (4960, 16228), (8114, 9920)]