18537740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1$

素因数の和:147

約数の個数: 96

約数和(自身を含む): 45045504

約数和(自身を除く): 26507764

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 37, 41, 47, 52, 65, 74, 82, 94, 130, 148, 164, 185, 188, 205, 235, 260, 370, 410, 470, 481, 533, 611, 740, 820, 940, 962, 1066, 1222, 1517, 1739, 1924, 1927, 2132, 2405, 2444, 2665, 3034, 3055, 3478, 3854, 4810, 5330, 6068, 6110, 6956, 7585, 7708, 8695, 9620, 9635, 10660, 12220, 15170, 17390, 19270, 19721, 22607, 25051, 30340, 34780, 38540, 39442, 45214, 50102, 71299, 78884, 90428, 98605, 100204, 113035, 125255, 142598, 197210, 226070, 250510, 285196, 356495, 394420, 452140, 501020, 712990, 926887, 1425980, 1853774, 3707548, 4634435, 9268870, 18537740]

約数ペア:

[(1, 18537740), (2, 9268870), (4, 4634435), (5, 3707548), (10, 1853774), (13, 1425980), (20, 926887), (26, 712990), (37, 501020), (41, 452140), (47, 394420), (52, 356495), (65, 285196), (74, 250510), (82, 226070), (94, 197210), (130, 142598), (148, 125255), (164, 113035), (185, 100204), (188, 98605), (205, 90428), (235, 78884), (260, 71299), (370, 50102), (410, 45214), (470, 39442), (481, 38540), (533, 34780), (611, 30340), (740, 25051), (820, 22607), (940, 19721), (962, 19270), (1066, 17390), (1222, 15170), (1517, 12220), (1739, 10660), (1924, 9635), (1927, 9620), (2132, 8695), (2405, 7708), (2444, 7585), (2665, 6956), (3034, 6110), (3055, 6068), (3478, 5330), (3854, 4810)]