18407870

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1$

素因数の和:189

約数の個数: 64

約数和(自身を含む): 37920960

約数和(自身を除く): 19513090

約数列:

[1, 2, 5, 10, 13, 26, 37, 43, 65, 74, 86, 89, 130, 178, 185, 215, 370, 430, 445, 481, 559, 890, 962, 1118, 1157, 1591, 2314, 2405, 2795, 3182, 3293, 3827, 4810, 5590, 5785, 6586, 7654, 7955, 11570, 15910, 16465, 19135, 20683, 32930, 38270, 41366, 42809, 49751, 85618, 99502, 103415, 141599, 206830, 214045, 248755, 283198, 428090, 497510, 707995, 1415990, 1840787, 3681574, 9203935, 18407870]

約数ペア:

[(1, 18407870), (2, 9203935), (5, 3681574), (10, 1840787), (13, 1415990), (26, 707995), (37, 497510), (43, 428090), (65, 283198), (74, 248755), (86, 214045), (89, 206830), (130, 141599), (178, 103415), (185, 99502), (215, 85618), (370, 49751), (430, 42809), (445, 41366), (481, 38270), (559, 32930), (890, 20683), (962, 19135), (1118, 16465), (1157, 15910), (1591, 11570), (2314, 7955), (2405, 7654), (2795, 6586), (3182, 5785), (3293, 5590), (3827, 4810)]