18384640

素因数分解:

$2^8\times 5^1\times {\mathrm{53}}^1\times {\mathrm{271}}^1$

素因数の和:345

約数の個数: 72

約数和(自身を含む): 45033408

約数和(自身を除く): 26648768

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 53, 64, 80, 106, 128, 160, 212, 256, 265, 271, 320, 424, 530, 542, 640, 848, 1060, 1084, 1280, 1355, 1696, 2120, 2168, 2710, 3392, 4240, 4336, 5420, 6784, 8480, 8672, 10840, 13568, 14363, 16960, 17344, 21680, 28726, 33920, 34688, 43360, 57452, 67840, 69376, 71815, 86720, 114904, 143630, 173440, 229808, 287260, 346880, 459616, 574520, 919232, 1149040, 1838464, 2298080, 3676928, 4596160, 9192320, 18384640]

約数ペア:

[(1, 18384640), (2, 9192320), (4, 4596160), (5, 3676928), (8, 2298080), (10, 1838464), (16, 1149040), (20, 919232), (32, 574520), (40, 459616), (53, 346880), (64, 287260), (80, 229808), (106, 173440), (128, 143630), (160, 114904), (212, 86720), (256, 71815), (265, 69376), (271, 67840), (320, 57452), (424, 43360), (530, 34688), (542, 33920), (640, 28726), (848, 21680), (1060, 17344), (1084, 16960), (1280, 14363), (1355, 13568), (1696, 10840), (2120, 8672), (2168, 8480), (2710, 6784), (3392, 5420), (4240, 4336)]