18302720

素因数分解:

$2^8\times 5^1\times {\mathrm{79}}^1\times {\mathrm{181}}^1$

素因数の和:281

約数の個数: 72

約数和(自身を含む): 44640960

約数和(自身を除く): 26338240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 79, 80, 128, 158, 160, 181, 256, 316, 320, 362, 395, 632, 640, 724, 790, 905, 1264, 1280, 1448, 1580, 1810, 2528, 2896, 3160, 3620, 5056, 5792, 6320, 7240, 10112, 11584, 12640, 14299, 14480, 20224, 23168, 25280, 28598, 28960, 46336, 50560, 57196, 57920, 71495, 101120, 114392, 115840, 142990, 228784, 231680, 285980, 457568, 571960, 915136, 1143920, 1830272, 2287840, 3660544, 4575680, 9151360, 18302720]

約数ペア:

[(1, 18302720), (2, 9151360), (4, 4575680), (5, 3660544), (8, 2287840), (10, 1830272), (16, 1143920), (20, 915136), (32, 571960), (40, 457568), (64, 285980), (79, 231680), (80, 228784), (128, 142990), (158, 115840), (160, 114392), (181, 101120), (256, 71495), (316, 57920), (320, 57196), (362, 50560), (395, 46336), (632, 28960), (640, 28598), (724, 25280), (790, 23168), (905, 20224), (1264, 14480), (1280, 14299), (1448, 12640), (1580, 11584), (1810, 10112), (2528, 7240), (2896, 6320), (3160, 5792), (3620, 5056)]