291264280

素因数分解:

$2^3\times 5^1\times {\mathrm{113}}^1\times {\mathrm{64439}}^1$

素因数の和:64563

約数の個数: 32

約数和(自身を含む): 661154400

約数和(自身を除く): 369890120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 113, 226, 452, 565, 904, 1130, 2260, 4520, 64439, 128878, 257756, 322195, 515512, 644390, 1288780, 2577560, 7281607, 14563214, 29126428, 36408035, 58252856, 72816070, 145632140, 291264280]

約数ペア:

[(1, 291264280), (2, 145632140), (4, 72816070), (5, 58252856), (8, 36408035), (10, 29126428), (20, 14563214), (40, 7281607), (113, 2577560), (226, 1288780), (452, 644390), (565, 515512), (904, 322195), (1130, 257756), (2260, 128878), (4520, 64439)]