251901390

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{645901}}^1$

素因数の和:645924

約数の個数: 32

約数和(自身を含む): 651069216

約数和(自身を除く): 399167826

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 645901, 1291802, 1937703, 3229505, 3875406, 6459010, 8396713, 9688515, 16793426, 19377030, 25190139, 41983565, 50380278, 83967130, 125950695, 251901390]

約数ペア:

[(1, 251901390), (2, 125950695), (3, 83967130), (5, 50380278), (6, 41983565), (10, 25190139), (13, 19377030), (15, 16793426), (26, 9688515), (30, 8396713), (39, 6459010), (65, 3875406), (78, 3229505), (130, 1937703), (195, 1291802), (390, 645901)]