18026890

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{113}}^1$

素因数の和:223

約数の個数: 64

約数和(自身を含む): 39004416

約数和(自身を除く): 20977526

約数列:

[1, 2, 5, 7, 10, 14, 35, 43, 53, 70, 86, 106, 113, 215, 226, 265, 301, 371, 430, 530, 565, 602, 742, 791, 1130, 1505, 1582, 1855, 2279, 3010, 3710, 3955, 4558, 4859, 5989, 7910, 9718, 11395, 11978, 15953, 22790, 24295, 29945, 31906, 34013, 41923, 48590, 59890, 68026, 79765, 83846, 159530, 170065, 209615, 257527, 340130, 419230, 515054, 1287635, 1802689, 2575270, 3605378, 9013445, 18026890]

約数ペア:

[(1, 18026890), (2, 9013445), (5, 3605378), (7, 2575270), (10, 1802689), (14, 1287635), (35, 515054), (43, 419230), (53, 340130), (70, 257527), (86, 209615), (106, 170065), (113, 159530), (215, 83846), (226, 79765), (265, 68026), (301, 59890), (371, 48590), (430, 41923), (530, 34013), (565, 31906), (602, 29945), (742, 24295), (791, 22790), (1130, 15953), (1505, 11978), (1582, 11395), (1855, 9718), (2279, 7910), (3010, 5989), (3710, 4859), (3955, 4558)]