20509710

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1223}}^1$

素因数の和:1289

約数の個数: 64

約数和(自身を含む): 54286848

約数和(自身を除く): 33777138

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 43, 65, 78, 86, 129, 130, 195, 215, 258, 390, 430, 559, 645, 1118, 1223, 1290, 1677, 2446, 2795, 3354, 3669, 5590, 6115, 7338, 8385, 12230, 15899, 16770, 18345, 31798, 36690, 47697, 52589, 79495, 95394, 105178, 157767, 158990, 238485, 262945, 315534, 476970, 525890, 683657, 788835, 1367314, 1577670, 2050971, 3418285, 4101942, 6836570, 10254855, 20509710]

約数ペア:

[(1, 20509710), (2, 10254855), (3, 6836570), (5, 4101942), (6, 3418285), (10, 2050971), (13, 1577670), (15, 1367314), (26, 788835), (30, 683657), (39, 525890), (43, 476970), (65, 315534), (78, 262945), (86, 238485), (129, 158990), (130, 157767), (195, 105178), (215, 95394), (258, 79495), (390, 52589), (430, 47697), (559, 36690), (645, 31798), (1118, 18345), (1223, 16770), (1290, 15899), (1677, 12230), (2446, 8385), (2795, 7338), (3354, 6115), (3669, 5590)]