215549540

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{263}}^1\times {\mathrm{953}}^1$

素因数の和:1268

約数の個数: 48

約数和(自身を含む): 465429888

約数和(自身を除く): 249880348

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 263, 430, 526, 860, 953, 1052, 1315, 1906, 2630, 3812, 4765, 5260, 9530, 11309, 19060, 22618, 40979, 45236, 56545, 81958, 113090, 163916, 204895, 226180, 250639, 409790, 501278, 819580, 1002556, 1253195, 2506390, 5012780, 10777477, 21554954, 43109908, 53887385, 107774770, 215549540]

約数ペア:

[(1, 215549540), (2, 107774770), (4, 53887385), (5, 43109908), (10, 21554954), (20, 10777477), (43, 5012780), (86, 2506390), (172, 1253195), (215, 1002556), (263, 819580), (430, 501278), (526, 409790), (860, 250639), (953, 226180), (1052, 204895), (1315, 163916), (1906, 113090), (2630, 81958), (3812, 56545), (4765, 45236), (5260, 40979), (9530, 22618), (11309, 19060)]