28021875

素因数分解:

$3^1\times 5^5\times 7^2\times {\mathrm{61}}^1$

素因数の和:103

約数の個数: 72

約数和(自身を含む): 55215216

約数和(自身を除く): 27193341

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 49, 61, 75, 105, 125, 147, 175, 183, 245, 305, 375, 427, 525, 625, 735, 875, 915, 1225, 1281, 1525, 1875, 2135, 2625, 2989, 3125, 3675, 4375, 4575, 6125, 6405, 7625, 8967, 9375, 10675, 13125, 14945, 18375, 21875, 22875, 30625, 32025, 38125, 44835, 53375, 65625, 74725, 91875, 114375, 153125, 160125, 190625, 224175, 266875, 373625, 459375, 571875, 800625, 1120875, 1334375, 1868125, 4003125, 5604375, 9340625, 28021875]

約数ペア:

[(1, 28021875), (3, 9340625), (5, 5604375), (7, 4003125), (15, 1868125), (21, 1334375), (25, 1120875), (35, 800625), (49, 571875), (61, 459375), (75, 373625), (105, 266875), (125, 224175), (147, 190625), (175, 160125), (183, 153125), (245, 114375), (305, 91875), (375, 74725), (427, 65625), (525, 53375), (625, 44835), (735, 38125), (875, 32025), (915, 30625), (1225, 22875), (1281, 21875), (1525, 18375), (1875, 14945), (2135, 13125), (2625, 10675), (2989, 9375), (3125, 8967), (3675, 7625), (4375, 6405), (4575, 6125)]