20500810

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{577}}^1$

素因数の和:631

約数の個数: 64

約数和(自身を含む): 44945280

約数和(自身を除く): 24444470

約数列:

[1, 2, 5, 10, 11, 17, 19, 22, 34, 38, 55, 85, 95, 110, 170, 187, 190, 209, 323, 374, 418, 577, 646, 935, 1045, 1154, 1615, 1870, 2090, 2885, 3230, 3553, 5770, 6347, 7106, 9809, 10963, 12694, 17765, 19618, 21926, 31735, 35530, 49045, 54815, 63470, 98090, 107899, 109630, 120593, 186371, 215798, 241186, 372742, 539495, 602965, 931855, 1078990, 1205930, 1863710, 2050081, 4100162, 10250405, 20500810]

約数ペア:

[(1, 20500810), (2, 10250405), (5, 4100162), (10, 2050081), (11, 1863710), (17, 1205930), (19, 1078990), (22, 931855), (34, 602965), (38, 539495), (55, 372742), (85, 241186), (95, 215798), (110, 186371), (170, 120593), (187, 109630), (190, 107899), (209, 98090), (323, 63470), (374, 54815), (418, 49045), (577, 35530), (646, 31735), (935, 21926), (1045, 19618), (1154, 17765), (1615, 12694), (1870, 10963), (2090, 9809), (2885, 7106), (3230, 6347), (3553, 5770)]