260047880

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{197}}^1\times {\mathrm{541}}^1$

素因数の和:810

約数の個数: 64

約数和(自身を含む): 598823280

約数和(自身を除く): 338775400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 197, 244, 305, 394, 488, 541, 610, 788, 985, 1082, 1220, 1576, 1970, 2164, 2440, 2705, 3940, 4328, 5410, 7880, 10820, 12017, 21640, 24034, 33001, 48068, 60085, 66002, 96136, 106577, 120170, 132004, 165005, 213154, 240340, 264008, 330010, 426308, 480680, 532885, 660020, 852616, 1065770, 1320040, 2131540, 4263080, 6501197, 13002394, 26004788, 32505985, 52009576, 65011970, 130023940, 260047880]

約数ペア:

[(1, 260047880), (2, 130023940), (4, 65011970), (5, 52009576), (8, 32505985), (10, 26004788), (20, 13002394), (40, 6501197), (61, 4263080), (122, 2131540), (197, 1320040), (244, 1065770), (305, 852616), (394, 660020), (488, 532885), (541, 480680), (610, 426308), (788, 330010), (985, 264008), (1082, 240340), (1220, 213154), (1576, 165005), (1970, 132004), (2164, 120170), (2440, 106577), (2705, 96136), (3940, 66002), (4328, 60085), (5410, 48068), (7880, 33001), (10820, 24034), (12017, 21640)]