20182460

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{233}}^1$

素因数の和:374

約数の個数: 48

約数和(自身を含む): 43872192

約数和(自身を除く): 23689732

約数列:

[1, 2, 4, 5, 10, 20, 61, 71, 122, 142, 233, 244, 284, 305, 355, 466, 610, 710, 932, 1165, 1220, 1420, 2330, 4331, 4660, 8662, 14213, 16543, 17324, 21655, 28426, 33086, 43310, 56852, 66172, 71065, 82715, 86620, 142130, 165430, 284260, 330860, 1009123, 2018246, 4036492, 5045615, 10091230, 20182460]

約数ペア:

[(1, 20182460), (2, 10091230), (4, 5045615), (5, 4036492), (10, 2018246), (20, 1009123), (61, 330860), (71, 284260), (122, 165430), (142, 142130), (233, 86620), (244, 82715), (284, 71065), (305, 66172), (355, 56852), (466, 43310), (610, 33086), (710, 28426), (932, 21655), (1165, 17324), (1220, 16543), (1420, 14213), (2330, 8662), (4331, 4660)]