40017880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{1091}}^1$

素因数の和:1240

約数の個数: 64

約数和(自身を含む): 103783680

約数和(自身を除く): 63765800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 131, 140, 262, 280, 524, 655, 917, 1048, 1091, 1310, 1834, 2182, 2620, 3668, 4364, 4585, 5240, 5455, 7336, 7637, 8728, 9170, 10910, 15274, 18340, 21820, 30548, 36680, 38185, 43640, 61096, 76370, 142921, 152740, 285842, 305480, 571684, 714605, 1000447, 1143368, 1429210, 2000894, 2858420, 4001788, 5002235, 5716840, 8003576, 10004470, 20008940, 40017880]

約数ペア:

[(1, 40017880), (2, 20008940), (4, 10004470), (5, 8003576), (7, 5716840), (8, 5002235), (10, 4001788), (14, 2858420), (20, 2000894), (28, 1429210), (35, 1143368), (40, 1000447), (56, 714605), (70, 571684), (131, 305480), (140, 285842), (262, 152740), (280, 142921), (524, 76370), (655, 61096), (917, 43640), (1048, 38185), (1091, 36680), (1310, 30548), (1834, 21820), (2182, 18340), (2620, 15274), (3668, 10910), (4364, 9170), (4585, 8728), (5240, 7637), (5455, 7336)]