131106820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{79}}^1\times {\mathrm{491}}^1$

素因数の和:605

約数の個数: 72

約数和(自身を含む): 302520960

約数和(自身を除く): 171414140

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 79, 130, 158, 169, 260, 316, 338, 395, 491, 676, 790, 845, 982, 1027, 1580, 1690, 1964, 2054, 2455, 3380, 4108, 4910, 5135, 6383, 9820, 10270, 12766, 13351, 20540, 25532, 26702, 31915, 38789, 53404, 63830, 66755, 77578, 82979, 127660, 133510, 155156, 165958, 193945, 267020, 331916, 387890, 414895, 504257, 775780, 829790, 1008514, 1659580, 2017028, 2521285, 5042570, 6555341, 10085140, 13110682, 26221364, 32776705, 65553410, 131106820]

約数ペア:

[(1, 131106820), (2, 65553410), (4, 32776705), (5, 26221364), (10, 13110682), (13, 10085140), (20, 6555341), (26, 5042570), (52, 2521285), (65, 2017028), (79, 1659580), (130, 1008514), (158, 829790), (169, 775780), (260, 504257), (316, 414895), (338, 387890), (395, 331916), (491, 267020), (676, 193945), (790, 165958), (845, 155156), (982, 133510), (1027, 127660), (1580, 82979), (1690, 77578), (1964, 66755), (2054, 63830), (2455, 53404), (3380, 38789), (4108, 31915), (4910, 26702), (5135, 25532), (6383, 20540), (9820, 13351), (10270, 12766)]