18414620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{4243}}^1$

素因数の和:4290

約数の個数: 48

約数和(自身を含む): 45631488

約数和(自身を除く): 27216868

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 155, 217, 310, 434, 620, 868, 1085, 2170, 4243, 4340, 8486, 16972, 21215, 29701, 42430, 59402, 84860, 118804, 131533, 148505, 263066, 297010, 526132, 594020, 657665, 920731, 1315330, 1841462, 2630660, 3682924, 4603655, 9207310, 18414620]

約数ペア:

[(1, 18414620), (2, 9207310), (4, 4603655), (5, 3682924), (7, 2630660), (10, 1841462), (14, 1315330), (20, 920731), (28, 657665), (31, 594020), (35, 526132), (62, 297010), (70, 263066), (124, 148505), (140, 131533), (155, 118804), (217, 84860), (310, 59402), (434, 42430), (620, 29701), (868, 21215), (1085, 16972), (2170, 8486), (4243, 4340)]