1981875

素因数分解:

$3^1\times 5^4\times 7^1\times {\mathrm{151}}^1$

素因数の和:181

約数の個数: 40

約数和(自身を含む): 3798784

約数和(自身を除く): 1816909

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 75, 105, 125, 151, 175, 375, 453, 525, 625, 755, 875, 1057, 1875, 2265, 2625, 3171, 3775, 4375, 5285, 11325, 13125, 15855, 18875, 26425, 56625, 79275, 94375, 132125, 283125, 396375, 660625, 1981875]

約数ペア:

[(1, 1981875), (3, 660625), (5, 396375), (7, 283125), (15, 132125), (21, 94375), (25, 79275), (35, 56625), (75, 26425), (105, 18875), (125, 15855), (151, 13125), (175, 11325), (375, 5285), (453, 4375), (525, 3775), (625, 3171), (755, 2625), (875, 2265), (1057, 1875)]