18165380

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{353}}^1$

素因数の和:476

約数の個数: 48

約数和(自身を含む): 39965184

約数和(自身を除く): 21799804

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 83, 124, 155, 166, 310, 332, 353, 415, 620, 706, 830, 1412, 1660, 1765, 2573, 3530, 5146, 7060, 10292, 10943, 12865, 21886, 25730, 29299, 43772, 51460, 54715, 58598, 109430, 117196, 146495, 218860, 292990, 585980, 908269, 1816538, 3633076, 4541345, 9082690, 18165380]

約数ペア:

[(1, 18165380), (2, 9082690), (4, 4541345), (5, 3633076), (10, 1816538), (20, 908269), (31, 585980), (62, 292990), (83, 218860), (124, 146495), (155, 117196), (166, 109430), (310, 58598), (332, 54715), (353, 51460), (415, 43772), (620, 29299), (706, 25730), (830, 21886), (1412, 12865), (1660, 10943), (1765, 10292), (2573, 7060), (3530, 5146)]