81273375

素因数分解:

$3^4\times 5^3\times {\mathrm{23}}^1\times {\mathrm{349}}^1$

素因数の和:399

約数の個数: 80

約数和(自身を含む): 158558400

約数和(自身を除く): 77285025

約数列:

[1, 3, 5, 9, 15, 23, 25, 27, 45, 69, 75, 81, 115, 125, 135, 207, 225, 345, 349, 375, 405, 575, 621, 675, 1035, 1047, 1125, 1725, 1745, 1863, 2025, 2875, 3105, 3141, 3375, 5175, 5235, 8027, 8625, 8725, 9315, 9423, 10125, 15525, 15705, 24081, 25875, 26175, 28269, 40135, 43625, 46575, 47115, 72243, 77625, 78525, 120405, 130875, 141345, 200675, 216729, 232875, 235575, 361215, 392625, 602025, 650187, 706725, 1003375, 1083645, 1177875, 1806075, 3010125, 3250935, 3533625, 5418225, 9030375, 16254675, 27091125, 81273375]

約数ペア:

[(1, 81273375), (3, 27091125), (5, 16254675), (9, 9030375), (15, 5418225), (23, 3533625), (25, 3250935), (27, 3010125), (45, 1806075), (69, 1177875), (75, 1083645), (81, 1003375), (115, 706725), (125, 650187), (135, 602025), (207, 392625), (225, 361215), (345, 235575), (349, 232875), (375, 216729), (405, 200675), (575, 141345), (621, 130875), (675, 120405), (1035, 78525), (1047, 77625), (1125, 72243), (1725, 47115), (1745, 46575), (1863, 43625), (2025, 40135), (2875, 28269), (3105, 26175), (3141, 25875), (3375, 24081), (5175, 15705), (5235, 15525), (8027, 10125), (8625, 9423), (8725, 9315)]