21515120

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{1063}}^1$

素因数の和:1110

約数の個数: 80

約数和(自身を含む): 56996352

約数和(自身を除く): 35481232

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 23, 40, 44, 46, 55, 80, 88, 92, 110, 115, 176, 184, 220, 230, 253, 368, 440, 460, 506, 880, 920, 1012, 1063, 1265, 1840, 2024, 2126, 2530, 4048, 4252, 5060, 5315, 8504, 10120, 10630, 11693, 17008, 20240, 21260, 23386, 24449, 42520, 46772, 48898, 58465, 85040, 93544, 97796, 116930, 122245, 187088, 195592, 233860, 244490, 268939, 391184, 467720, 488980, 537878, 935440, 977960, 1075756, 1344695, 1955920, 2151512, 2689390, 4303024, 5378780, 10757560, 21515120]

約数ペア:

[(1, 21515120), (2, 10757560), (4, 5378780), (5, 4303024), (8, 2689390), (10, 2151512), (11, 1955920), (16, 1344695), (20, 1075756), (22, 977960), (23, 935440), (40, 537878), (44, 488980), (46, 467720), (55, 391184), (80, 268939), (88, 244490), (92, 233860), (110, 195592), (115, 187088), (176, 122245), (184, 116930), (220, 97796), (230, 93544), (253, 85040), (368, 58465), (440, 48898), (460, 46772), (506, 42520), (880, 24449), (920, 23386), (1012, 21260), (1063, 20240), (1265, 17008), (1840, 11693), (2024, 10630), (2126, 10120), (2530, 8504), (4048, 5315), (4252, 5060)]