320465980

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{389}}^1\times {\mathrm{2423}}^1$

素因数の和:2838

約数の個数: 48

約数和(自身を含む): 714692160

約数和(自身を除く): 394226180

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 389, 778, 1556, 1945, 2423, 3890, 4846, 6613, 7780, 9692, 12115, 13226, 24230, 26452, 33065, 41191, 48460, 66130, 82382, 132260, 164764, 205955, 411910, 823820, 942547, 1885094, 3770188, 4712735, 9425470, 16023299, 18850940, 32046598, 64093196, 80116495, 160232990, 320465980]

約数ペア:

[(1, 320465980), (2, 160232990), (4, 80116495), (5, 64093196), (10, 32046598), (17, 18850940), (20, 16023299), (34, 9425470), (68, 4712735), (85, 3770188), (170, 1885094), (340, 942547), (389, 823820), (778, 411910), (1556, 205955), (1945, 164764), (2423, 132260), (3890, 82382), (4846, 66130), (6613, 48460), (7780, 41191), (9692, 33065), (12115, 26452), (13226, 24230)]