20921784

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{67057}}^1$

素因数の和:67079

約数の個数: 32

約数和(自身を含む): 56328720

約数和(自身を除く): 35406936

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 156, 312, 67057, 134114, 201171, 268228, 402342, 536456, 804684, 871741, 1609368, 1743482, 2615223, 3486964, 5230446, 6973928, 10460892, 20921784]

約数ペア:

[(1, 20921784), (2, 10460892), (3, 6973928), (4, 5230446), (6, 3486964), (8, 2615223), (12, 1743482), (13, 1609368), (24, 871741), (26, 804684), (39, 536456), (52, 402342), (78, 268228), (104, 201171), (156, 134114), (312, 67057)]