996942140

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{401}}^1\times {\mathrm{631}}^1$

素因数の和:1238

約数の個数: 48

約数和(自身を含む): 2112796224

約数和(自身を除く): 1115854084

約数列:

[1, 2, 4, 5, 10, 20, 197, 394, 401, 631, 788, 802, 985, 1262, 1604, 1970, 2005, 2524, 3155, 3940, 4010, 6310, 8020, 12620, 78997, 124307, 157994, 248614, 253031, 315988, 394985, 497228, 506062, 621535, 789970, 1012124, 1243070, 1265155, 1579940, 2486140, 2530310, 5060620, 49847107, 99694214, 199388428, 249235535, 498471070, 996942140]

約数ペア:

[(1, 996942140), (2, 498471070), (4, 249235535), (5, 199388428), (10, 99694214), (20, 49847107), (197, 5060620), (394, 2530310), (401, 2486140), (631, 1579940), (788, 1265155), (802, 1243070), (985, 1012124), (1262, 789970), (1604, 621535), (1970, 506062), (2005, 497228), (2524, 394985), (3155, 315988), (3940, 253031), (4010, 248614), (6310, 157994), (8020, 124307), (12620, 78997)]