647577220

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1\times {\mathrm{6719}}^1$

素因数の和:6868

約数の個数: 48

約数和(自身を含む): 1399910400

約数和(自身を除く): 752333180

約数列:

[1, 2, 4, 5, 10, 20, 61, 79, 122, 158, 244, 305, 316, 395, 610, 790, 1220, 1580, 4819, 6719, 9638, 13438, 19276, 24095, 26876, 33595, 48190, 67190, 96380, 134380, 409859, 530801, 819718, 1061602, 1639436, 2049295, 2123204, 2654005, 4098590, 5308010, 8197180, 10616020, 32378861, 64757722, 129515444, 161894305, 323788610, 647577220]

約数ペア:

[(1, 647577220), (2, 323788610), (4, 161894305), (5, 129515444), (10, 64757722), (20, 32378861), (61, 10616020), (79, 8197180), (122, 5308010), (158, 4098590), (244, 2654005), (305, 2123204), (316, 2049295), (395, 1639436), (610, 1061602), (790, 819718), (1220, 530801), (1580, 409859), (4819, 134380), (6719, 96380), (9638, 67190), (13438, 48190), (19276, 33595), (24095, 26876)]