20208690

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{409}}^1$

素因数の和:489

約数の個数: 80

約数和(自身を含む): 55364760

約数和(自身を除く): 35156070

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 61, 81, 90, 122, 135, 162, 183, 270, 305, 366, 405, 409, 549, 610, 810, 818, 915, 1098, 1227, 1647, 1830, 2045, 2454, 2745, 3294, 3681, 4090, 4941, 5490, 6135, 7362, 8235, 9882, 11043, 12270, 16470, 18405, 22086, 24705, 24949, 33129, 36810, 49410, 49898, 55215, 66258, 74847, 110430, 124745, 149694, 165645, 224541, 249490, 331290, 374235, 449082, 673623, 748470, 1122705, 1347246, 2020869, 2245410, 3368115, 4041738, 6736230, 10104345, 20208690]

約数ペア:

[(1, 20208690), (2, 10104345), (3, 6736230), (5, 4041738), (6, 3368115), (9, 2245410), (10, 2020869), (15, 1347246), (18, 1122705), (27, 748470), (30, 673623), (45, 449082), (54, 374235), (61, 331290), (81, 249490), (90, 224541), (122, 165645), (135, 149694), (162, 124745), (183, 110430), (270, 74847), (305, 66258), (366, 55215), (405, 49898), (409, 49410), (549, 36810), (610, 33129), (810, 24949), (818, 24705), (915, 22086), (1098, 18405), (1227, 16470), (1647, 12270), (1830, 11043), (2045, 9882), (2454, 8235), (2745, 7362), (3294, 6135), (3681, 5490), (4090, 4941)]