289759540

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{42239}}^1$

素因数の和:42269

約数の個数: 48

約数和(自身を含む): 709632000

約数和(自身を除く): 419872460

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 343, 490, 686, 980, 1372, 1715, 3430, 6860, 42239, 84478, 168956, 211195, 295673, 422390, 591346, 844780, 1182692, 1478365, 2069711, 2956730, 4139422, 5913460, 8278844, 10348555, 14487977, 20697110, 28975954, 41394220, 57951908, 72439885, 144879770, 289759540]

約数ペア:

[(1, 289759540), (2, 144879770), (4, 72439885), (5, 57951908), (7, 41394220), (10, 28975954), (14, 20697110), (20, 14487977), (28, 10348555), (35, 8278844), (49, 5913460), (70, 4139422), (98, 2956730), (140, 2069711), (196, 1478365), (245, 1182692), (343, 844780), (490, 591346), (686, 422390), (980, 295673), (1372, 211195), (1715, 168956), (3430, 84478), (6860, 42239)]