20654660

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{4673}}^1$

素因数の和:4712

約数の個数: 48

約数和(自身を含む): 49469616

約数和(自身を除く): 28814956

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 52, 65, 68, 85, 130, 170, 221, 260, 340, 442, 884, 1105, 2210, 4420, 4673, 9346, 18692, 23365, 46730, 60749, 79441, 93460, 121498, 158882, 242996, 303745, 317764, 397205, 607490, 794410, 1032733, 1214980, 1588820, 2065466, 4130932, 5163665, 10327330, 20654660]

約数ペア:

[(1, 20654660), (2, 10327330), (4, 5163665), (5, 4130932), (10, 2065466), (13, 1588820), (17, 1214980), (20, 1032733), (26, 794410), (34, 607490), (52, 397205), (65, 317764), (68, 303745), (85, 242996), (130, 158882), (170, 121498), (221, 93460), (260, 79441), (340, 60749), (442, 46730), (884, 23365), (1105, 18692), (2210, 9346), (4420, 4673)]