320219848

素因数分解:

$2^3\times {\mathrm{13}}^2\times {\mathrm{239}}^1\times {\mathrm{991}}^1$

素因数の和:1262

約数の個数: 48

約数和(自身を含む): 653529600

約数和(自身を除く): 333309752

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 169, 239, 338, 478, 676, 956, 991, 1352, 1912, 1982, 3107, 3964, 6214, 7928, 12428, 12883, 24856, 25766, 40391, 51532, 80782, 103064, 161564, 167479, 236849, 323128, 334958, 473698, 669916, 947396, 1339832, 1894792, 3079037, 6158074, 12316148, 24632296, 40027481, 80054962, 160109924, 320219848]

約数ペア:

[(1, 320219848), (2, 160109924), (4, 80054962), (8, 40027481), (13, 24632296), (26, 12316148), (52, 6158074), (104, 3079037), (169, 1894792), (239, 1339832), (338, 947396), (478, 669916), (676, 473698), (956, 334958), (991, 323128), (1352, 236849), (1912, 167479), (1982, 161564), (3107, 103064), (3964, 80782), (6214, 51532), (7928, 40391), (12428, 25766), (12883, 24856)]