66784120

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{128431}}^1$

素因数の和:128455

約数の個数: 32

約数和(自身を含む): 161824320

約数和(自身を除く): 95040200

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 128431, 256862, 513724, 642155, 1027448, 1284310, 1669603, 2568620, 3339206, 5137240, 6678412, 8348015, 13356824, 16696030, 33392060, 66784120]

約数ペア:

[(1, 66784120), (2, 33392060), (4, 16696030), (5, 13356824), (8, 8348015), (10, 6678412), (13, 5137240), (20, 3339206), (26, 2568620), (40, 1669603), (52, 1284310), (65, 1027448), (104, 642155), (130, 513724), (260, 256862), (520, 128431)]