18179020

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{269}}^1$

素因数の和:418

約数の個数: 48

約数和(自身を含む): 39916800

約数和(自身を除く): 21737780

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 109, 124, 155, 218, 269, 310, 436, 538, 545, 620, 1076, 1090, 1345, 2180, 2690, 3379, 5380, 6758, 8339, 13516, 16678, 16895, 29321, 33356, 33790, 41695, 58642, 67580, 83390, 117284, 146605, 166780, 293210, 586420, 908951, 1817902, 3635804, 4544755, 9089510, 18179020]

約数ペア:

[(1, 18179020), (2, 9089510), (4, 4544755), (5, 3635804), (10, 1817902), (20, 908951), (31, 586420), (62, 293210), (109, 166780), (124, 146605), (155, 117284), (218, 83390), (269, 67580), (310, 58642), (436, 41695), (538, 33790), (545, 33356), (620, 29321), (1076, 16895), (1090, 16678), (1345, 13516), (2180, 8339), (2690, 6758), (3379, 5380)]