211591540

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{491}}^1\times {\mathrm{743}}^1$

素因数の和:1272

約数の個数: 48

約数和(自身を含む): 461220480

約数和(自身を除く): 249628940

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 491, 580, 743, 982, 1486, 1964, 2455, 2972, 3715, 4910, 7430, 9820, 14239, 14860, 21547, 28478, 43094, 56956, 71195, 86188, 107735, 142390, 215470, 284780, 364813, 430940, 729626, 1459252, 1824065, 3648130, 7296260, 10579577, 21159154, 42318308, 52897885, 105795770, 211591540]

約数ペア:

[(1, 211591540), (2, 105795770), (4, 52897885), (5, 42318308), (10, 21159154), (20, 10579577), (29, 7296260), (58, 3648130), (116, 1824065), (145, 1459252), (290, 729626), (491, 430940), (580, 364813), (743, 284780), (982, 215470), (1486, 142390), (1964, 107735), (2455, 86188), (2972, 71195), (3715, 56956), (4910, 43094), (7430, 28478), (9820, 21547), (14239, 14860)]