221363625

素因数分解:

$3^1\times 5^3\times 7^3\times {\mathrm{1721}}^1$

素因数の和:1760

約数の個数: 64

約数和(自身を含む): 429811200

約数和(自身を除く): 208447575

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 49, 75, 105, 125, 147, 175, 245, 343, 375, 525, 735, 875, 1029, 1225, 1715, 1721, 2625, 3675, 5145, 5163, 6125, 8575, 8605, 12047, 18375, 25725, 25815, 36141, 42875, 43025, 60235, 84329, 128625, 129075, 180705, 215125, 252987, 301175, 421645, 590303, 645375, 903525, 1264935, 1505875, 1770909, 2108225, 2951515, 4517625, 6324675, 8854545, 10541125, 14757575, 31623375, 44272725, 73787875, 221363625]

約数ペア:

[(1, 221363625), (3, 73787875), (5, 44272725), (7, 31623375), (15, 14757575), (21, 10541125), (25, 8854545), (35, 6324675), (49, 4517625), (75, 2951515), (105, 2108225), (125, 1770909), (147, 1505875), (175, 1264935), (245, 903525), (343, 645375), (375, 590303), (525, 421645), (735, 301175), (875, 252987), (1029, 215125), (1225, 180705), (1715, 129075), (1721, 128625), (2625, 84329), (3675, 60235), (5145, 43025), (5163, 42875), (6125, 36141), (8575, 25815), (8605, 25725), (12047, 18375)]