21238070

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{89}}^1\times {\mathrm{487}}^1$

素因数の和:597

約数の個数: 48

約数和(自身を含む): 45061920

約数和(自身を除く): 23823850

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 89, 98, 178, 245, 445, 487, 490, 623, 890, 974, 1246, 2435, 3115, 3409, 4361, 4870, 6230, 6818, 8722, 17045, 21805, 23863, 34090, 43343, 43610, 47726, 86686, 119315, 216715, 238630, 303401, 433430, 606802, 1517005, 2123807, 3034010, 4247614, 10619035, 21238070]

約数ペア:

[(1, 21238070), (2, 10619035), (5, 4247614), (7, 3034010), (10, 2123807), (14, 1517005), (35, 606802), (49, 433430), (70, 303401), (89, 238630), (98, 216715), (178, 119315), (245, 86686), (445, 47726), (487, 43610), (490, 43343), (623, 34090), (890, 23863), (974, 21805), (1246, 17045), (2435, 8722), (3115, 6818), (3409, 6230), (4361, 4870)]