21566540

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{137}}^1\times {\mathrm{463}}^1$

素因数の和:626

約数の個数: 48

約数和(自身を含む): 48408192

約数和(自身を除く): 26841652

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 137, 170, 274, 340, 463, 548, 685, 926, 1370, 1852, 2315, 2329, 2740, 4630, 4658, 7871, 9260, 9316, 11645, 15742, 23290, 31484, 39355, 46580, 63431, 78710, 126862, 157420, 253724, 317155, 634310, 1078327, 1268620, 2156654, 4313308, 5391635, 10783270, 21566540]

約数ペア:

[(1, 21566540), (2, 10783270), (4, 5391635), (5, 4313308), (10, 2156654), (17, 1268620), (20, 1078327), (34, 634310), (68, 317155), (85, 253724), (137, 157420), (170, 126862), (274, 78710), (340, 63431), (463, 46580), (548, 39355), (685, 31484), (926, 23290), (1370, 15742), (1852, 11645), (2315, 9316), (2329, 9260), (2740, 7871), (4630, 4658)]