20512908

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{827}}^1$

素因数の和:903

約数の個数: 72

約数和(自身を含む): 56963088

約数和(自身を除く): 36450180

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 53, 78, 106, 117, 156, 159, 212, 234, 318, 468, 477, 636, 689, 827, 954, 1378, 1654, 1908, 2067, 2481, 2756, 3308, 4134, 4962, 6201, 7443, 8268, 9924, 10751, 12402, 14886, 21502, 24804, 29772, 32253, 43004, 43831, 64506, 87662, 96759, 129012, 131493, 175324, 193518, 262986, 387036, 394479, 525972, 569803, 788958, 1139606, 1577916, 1709409, 2279212, 3418818, 5128227, 6837636, 10256454, 20512908]

約数ペア:

[(1, 20512908), (2, 10256454), (3, 6837636), (4, 5128227), (6, 3418818), (9, 2279212), (12, 1709409), (13, 1577916), (18, 1139606), (26, 788958), (36, 569803), (39, 525972), (52, 394479), (53, 387036), (78, 262986), (106, 193518), (117, 175324), (156, 131493), (159, 129012), (212, 96759), (234, 87662), (318, 64506), (468, 43831), (477, 43004), (636, 32253), (689, 29772), (827, 24804), (954, 21502), (1378, 14886), (1654, 12402), (1908, 10751), (2067, 9924), (2481, 8268), (2756, 7443), (3308, 6201), (4134, 4962)]