664454375

素因数分解:

$5^4\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{1543}}^1$

素因数の和:1629

約数の個数: 40

約数和(自身を含む): 911633184

約数和(自身を除く): 247178809

約数列:

[1, 5, 13, 25, 53, 65, 125, 265, 325, 625, 689, 1325, 1543, 1625, 3445, 6625, 7715, 8125, 17225, 20059, 33125, 38575, 81779, 86125, 100295, 192875, 408895, 430625, 501475, 964375, 1063127, 2044475, 2507375, 5315635, 10222375, 12536875, 26578175, 51111875, 132890875, 664454375]

約数ペア:

[(1, 664454375), (5, 132890875), (13, 51111875), (25, 26578175), (53, 12536875), (65, 10222375), (125, 5315635), (265, 2507375), (325, 2044475), (625, 1063127), (689, 964375), (1325, 501475), (1543, 430625), (1625, 408895), (3445, 192875), (6625, 100295), (7715, 86125), (8125, 81779), (17225, 38575), (20059, 33125)]