20008020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{31}}^2\times {\mathrm{347}}^1$

素因数の和:421

約数の個数: 72

約数和(自身を含む): 58054752

約数和(自身を除く): 38046732

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 31, 60, 62, 93, 124, 155, 186, 310, 347, 372, 465, 620, 694, 930, 961, 1041, 1388, 1735, 1860, 1922, 2082, 2883, 3470, 3844, 4164, 4805, 5205, 5766, 6940, 9610, 10410, 10757, 11532, 14415, 19220, 20820, 21514, 28830, 32271, 43028, 53785, 57660, 64542, 107570, 129084, 161355, 215140, 322710, 333467, 645420, 666934, 1000401, 1333868, 1667335, 2000802, 3334670, 4001604, 5002005, 6669340, 10004010, 20008020]

約数ペア:

[(1, 20008020), (2, 10004010), (3, 6669340), (4, 5002005), (5, 4001604), (6, 3334670), (10, 2000802), (12, 1667335), (15, 1333868), (20, 1000401), (30, 666934), (31, 645420), (60, 333467), (62, 322710), (93, 215140), (124, 161355), (155, 129084), (186, 107570), (310, 64542), (347, 57660), (372, 53785), (465, 43028), (620, 32271), (694, 28830), (930, 21514), (961, 20820), (1041, 19220), (1388, 14415), (1735, 11532), (1860, 10757), (1922, 10410), (2082, 9610), (2883, 6940), (3470, 5766), (3844, 5205), (4164, 4805)]