21847540

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{7639}}^1$

素因数の和:7672

約数の個数: 48

約数和(自身を含む): 53907840

約数和(自身を除く): 32060300

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 130, 143, 220, 260, 286, 572, 715, 1430, 2860, 7639, 15278, 30556, 38195, 76390, 84029, 99307, 152780, 168058, 198614, 336116, 397228, 420145, 496535, 840290, 993070, 1092377, 1680580, 1986140, 2184754, 4369508, 5461885, 10923770, 21847540]

約数ペア:

[(1, 21847540), (2, 10923770), (4, 5461885), (5, 4369508), (10, 2184754), (11, 1986140), (13, 1680580), (20, 1092377), (22, 993070), (26, 840290), (44, 496535), (52, 420145), (55, 397228), (65, 336116), (110, 198614), (130, 168058), (143, 152780), (220, 99307), (260, 84029), (286, 76390), (572, 38195), (715, 30556), (1430, 15278), (2860, 7639)]