81443540

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{241}}^1\times {\mathrm{277}}^1$

素因数の和:588

約数の個数: 48

約数和(自身を含む): 175186704

約数和(自身を除く): 93743164

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 241, 244, 277, 305, 482, 554, 610, 964, 1108, 1205, 1220, 1385, 2410, 2770, 4820, 5540, 14701, 16897, 29402, 33794, 58804, 66757, 67588, 73505, 84485, 133514, 147010, 168970, 267028, 294020, 333785, 337940, 667570, 1335140, 4072177, 8144354, 16288708, 20360885, 40721770, 81443540]

約数ペア:

[(1, 81443540), (2, 40721770), (4, 20360885), (5, 16288708), (10, 8144354), (20, 4072177), (61, 1335140), (122, 667570), (241, 337940), (244, 333785), (277, 294020), (305, 267028), (482, 168970), (554, 147010), (610, 133514), (964, 84485), (1108, 73505), (1205, 67588), (1220, 66757), (1385, 58804), (2410, 33794), (2770, 29402), (4820, 16897), (5540, 14701)]