18770990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{131}}^1$

素因数の和:257

約数の個数: 64

約数和(自身を含む): 41057280

約数和(自身を除く): 22286290

約数列:

[1, 2, 5, 7, 10, 14, 23, 35, 46, 70, 89, 115, 131, 161, 178, 230, 262, 322, 445, 623, 655, 805, 890, 917, 1246, 1310, 1610, 1834, 2047, 3013, 3115, 4094, 4585, 6026, 6230, 9170, 10235, 11659, 14329, 15065, 20470, 21091, 23318, 28658, 30130, 42182, 58295, 71645, 81613, 105455, 116590, 143290, 163226, 210910, 268157, 408065, 536314, 816130, 1340785, 1877099, 2681570, 3754198, 9385495, 18770990]

約数ペア:

[(1, 18770990), (2, 9385495), (5, 3754198), (7, 2681570), (10, 1877099), (14, 1340785), (23, 816130), (35, 536314), (46, 408065), (70, 268157), (89, 210910), (115, 163226), (131, 143290), (161, 116590), (178, 105455), (230, 81613), (262, 71645), (322, 58295), (445, 42182), (623, 30130), (655, 28658), (805, 23318), (890, 21091), (917, 20470), (1246, 15065), (1310, 14329), (1610, 11659), (1834, 10235), (2047, 9170), (3013, 6230), (3115, 6026), (4094, 4585)]