18290740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{683}}^1$

素因数の和:808

約数の個数: 48

約数和(自身を含む): 41827968

約数和(自身を除く): 23537228

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 103, 130, 206, 260, 412, 515, 683, 1030, 1339, 1366, 2060, 2678, 2732, 3415, 5356, 6695, 6830, 8879, 13390, 13660, 17758, 26780, 35516, 44395, 70349, 88790, 140698, 177580, 281396, 351745, 703490, 914537, 1406980, 1829074, 3658148, 4572685, 9145370, 18290740]

約数ペア:

[(1, 18290740), (2, 9145370), (4, 4572685), (5, 3658148), (10, 1829074), (13, 1406980), (20, 914537), (26, 703490), (52, 351745), (65, 281396), (103, 177580), (130, 140698), (206, 88790), (260, 70349), (412, 44395), (515, 35516), (683, 26780), (1030, 17758), (1339, 13660), (1366, 13390), (2060, 8879), (2678, 6830), (2732, 6695), (3415, 5356)]