39990370

素因数分解:

$2^1\times 5^1\times 7^3\times {\mathrm{89}}^1\times {\mathrm{131}}^1$

素因数の和:248

約数の個数: 64

約数和(自身を含む): 85536000

約数和(自身を除く): 45545630

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 89, 98, 131, 178, 245, 262, 343, 445, 490, 623, 655, 686, 890, 917, 1246, 1310, 1715, 1834, 3115, 3430, 4361, 4585, 6230, 6419, 8722, 9170, 11659, 12838, 21805, 23318, 30527, 32095, 43610, 44933, 58295, 61054, 64190, 81613, 89866, 116590, 152635, 163226, 224665, 305270, 408065, 449330, 571291, 816130, 1142582, 2856455, 3999037, 5712910, 7998074, 19995185, 39990370]

約数ペア:

[(1, 39990370), (2, 19995185), (5, 7998074), (7, 5712910), (10, 3999037), (14, 2856455), (35, 1142582), (49, 816130), (70, 571291), (89, 449330), (98, 408065), (131, 305270), (178, 224665), (245, 163226), (262, 152635), (343, 116590), (445, 89866), (490, 81613), (623, 64190), (655, 61054), (686, 58295), (890, 44933), (917, 43610), (1246, 32095), (1310, 30527), (1715, 23318), (1834, 21805), (3115, 12838), (3430, 11659), (4361, 9170), (4585, 8722), (6230, 6419)]