80818240

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^1\times {\mathrm{8147}}^1$

素因数の和:8195

約数の個数: 56

約数和(自身を含む): 198680832

約数和(自身を除く): 117862592

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 155, 160, 248, 310, 320, 496, 620, 992, 1240, 1984, 2480, 4960, 8147, 9920, 16294, 32588, 40735, 65176, 81470, 130352, 162940, 252557, 260704, 325880, 505114, 521408, 651760, 1010228, 1262785, 1303520, 2020456, 2525570, 2607040, 4040912, 5051140, 8081824, 10102280, 16163648, 20204560, 40409120, 80818240]

約数ペア:

[(1, 80818240), (2, 40409120), (4, 20204560), (5, 16163648), (8, 10102280), (10, 8081824), (16, 5051140), (20, 4040912), (31, 2607040), (32, 2525570), (40, 2020456), (62, 1303520), (64, 1262785), (80, 1010228), (124, 651760), (155, 521408), (160, 505114), (248, 325880), (310, 260704), (320, 252557), (496, 162940), (620, 130352), (992, 81470), (1240, 65176), (1984, 40735), (2480, 32588), (4960, 16294), (8147, 9920)]