20368720

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^2\times {\mathrm{881}}^1$

素因数の和:928

約数の個数: 60

約数和(自身を含む): 50363964

約数和(自身を除く): 29995244

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 289, 340, 578, 680, 881, 1156, 1360, 1445, 1762, 2312, 2890, 3524, 4405, 4624, 5780, 7048, 8810, 11560, 14096, 14977, 17620, 23120, 29954, 35240, 59908, 70480, 74885, 119816, 149770, 239632, 254609, 299540, 509218, 599080, 1018436, 1198160, 1273045, 2036872, 2546090, 4073744, 5092180, 10184360, 20368720]

約数ペア:

[(1, 20368720), (2, 10184360), (4, 5092180), (5, 4073744), (8, 2546090), (10, 2036872), (16, 1273045), (17, 1198160), (20, 1018436), (34, 599080), (40, 509218), (68, 299540), (80, 254609), (85, 239632), (136, 149770), (170, 119816), (272, 74885), (289, 70480), (340, 59908), (578, 35240), (680, 29954), (881, 23120), (1156, 17620), (1360, 14977), (1445, 14096), (1762, 11560), (2312, 8810), (2890, 7048), (3524, 5780), (4405, 4624)]