128399680

素因数分解:

$2^6\times 5^1\times {\mathrm{307}}^1\times {\mathrm{1307}}^1$

素因数の和:1631

約数の個数: 56

約数和(自身を含む): 306982368

約数和(自身を除く): 178582688

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 307, 320, 614, 1228, 1307, 1535, 2456, 2614, 3070, 4912, 5228, 6140, 6535, 9824, 10456, 12280, 13070, 19648, 20912, 24560, 26140, 41824, 49120, 52280, 83648, 98240, 104560, 209120, 401249, 418240, 802498, 1604996, 2006245, 3209992, 4012490, 6419984, 8024980, 12839968, 16049960, 25679936, 32099920, 64199840, 128399680]

約数ペア:

[(1, 128399680), (2, 64199840), (4, 32099920), (5, 25679936), (8, 16049960), (10, 12839968), (16, 8024980), (20, 6419984), (32, 4012490), (40, 3209992), (64, 2006245), (80, 1604996), (160, 802498), (307, 418240), (320, 401249), (614, 209120), (1228, 104560), (1307, 98240), (1535, 83648), (2456, 52280), (2614, 49120), (3070, 41824), (4912, 26140), (5228, 24560), (6140, 20912), (6535, 19648), (9824, 13070), (10456, 12280)]