21762780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{27901}}^1$

素因数の和:27926

約数の個数: 48

約数和(自身を含む): 65625504

約数和(自身を除く): 43862724

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 27901, 55802, 83703, 111604, 139505, 167406, 279010, 334812, 362713, 418515, 558020, 725426, 837030, 1088139, 1450852, 1674060, 1813565, 2176278, 3627130, 4352556, 5440695, 7254260, 10881390, 21762780]

約数ペア:

[(1, 21762780), (2, 10881390), (3, 7254260), (4, 5440695), (5, 4352556), (6, 3627130), (10, 2176278), (12, 1813565), (13, 1674060), (15, 1450852), (20, 1088139), (26, 837030), (30, 725426), (39, 558020), (52, 418515), (60, 362713), (65, 334812), (78, 279010), (130, 167406), (156, 139505), (195, 111604), (260, 83703), (390, 55802), (780, 27901)]