289399960

素因数分解:

$2^3\times 5^1\times {\mathrm{131}}^1\times {\mathrm{55229}}^1$

素因数の和:55371

約数の個数: 32

約数和(自身を含む): 656132400

約数和(自身を除く): 366732440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 131, 262, 524, 655, 1048, 1310, 2620, 5240, 55229, 110458, 220916, 276145, 441832, 552290, 1104580, 2209160, 7234999, 14469998, 28939996, 36174995, 57879992, 72349990, 144699980, 289399960]

約数ペア:

[(1, 289399960), (2, 144699980), (4, 72349990), (5, 57879992), (8, 36174995), (10, 28939996), (20, 14469998), (40, 7234999), (131, 2209160), (262, 1104580), (524, 552290), (655, 441832), (1048, 276145), (1310, 220916), (2620, 110458), (5240, 55229)]