20756660

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{1489}}^1$

素因数の和:1556

約数の個数: 48

約数和(自身を含む): 47310480

約数和(自身を除く): 26553820

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 41, 68, 82, 85, 164, 170, 205, 340, 410, 697, 820, 1394, 1489, 2788, 2978, 3485, 5956, 6970, 7445, 13940, 14890, 25313, 29780, 50626, 61049, 101252, 122098, 126565, 244196, 253130, 305245, 506260, 610490, 1037833, 1220980, 2075666, 4151332, 5189165, 10378330, 20756660]

約数ペア:

[(1, 20756660), (2, 10378330), (4, 5189165), (5, 4151332), (10, 2075666), (17, 1220980), (20, 1037833), (34, 610490), (41, 506260), (68, 305245), (82, 253130), (85, 244196), (164, 126565), (170, 122098), (205, 101252), (340, 61049), (410, 50626), (697, 29780), (820, 25313), (1394, 14890), (1489, 13940), (2788, 7445), (2978, 6970), (3485, 5956)]