28150280

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{83}}^1\times {\mathrm{139}}^1$

素因数の和:294

約数の個数: 64

約数和(自身を含む): 65620800

約数和(自身を除く): 37470520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 83, 122, 139, 166, 244, 278, 305, 332, 415, 488, 556, 610, 664, 695, 830, 1112, 1220, 1390, 1660, 2440, 2780, 3320, 5063, 5560, 8479, 10126, 11537, 16958, 20252, 23074, 25315, 33916, 40504, 42395, 46148, 50630, 57685, 67832, 84790, 92296, 101260, 115370, 169580, 202520, 230740, 339160, 461480, 703757, 1407514, 2815028, 3518785, 5630056, 7037570, 14075140, 28150280]

約数ペア:

[(1, 28150280), (2, 14075140), (4, 7037570), (5, 5630056), (8, 3518785), (10, 2815028), (20, 1407514), (40, 703757), (61, 461480), (83, 339160), (122, 230740), (139, 202520), (166, 169580), (244, 115370), (278, 101260), (305, 92296), (332, 84790), (415, 67832), (488, 57685), (556, 50630), (610, 46148), (664, 42395), (695, 40504), (830, 33916), (1112, 25315), (1220, 23074), (1390, 20252), (1660, 16958), (2440, 11537), (2780, 10126), (3320, 8479), (5063, 5560)]