18999280

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{163}}^1$

素因数の和:254

約数の個数: 80

約数和(自身を含む): 46854144

約数和(自身を除く): 27854864

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 47, 62, 80, 94, 124, 155, 163, 188, 235, 248, 310, 326, 376, 470, 496, 620, 652, 752, 815, 940, 1240, 1304, 1457, 1630, 1880, 2480, 2608, 2914, 3260, 3760, 5053, 5828, 6520, 7285, 7661, 10106, 11656, 13040, 14570, 15322, 20212, 23312, 25265, 29140, 30644, 38305, 40424, 50530, 58280, 61288, 76610, 80848, 101060, 116560, 122576, 153220, 202120, 237491, 306440, 404240, 474982, 612880, 949964, 1187455, 1899928, 2374910, 3799856, 4749820, 9499640, 18999280]

約数ペア:

[(1, 18999280), (2, 9499640), (4, 4749820), (5, 3799856), (8, 2374910), (10, 1899928), (16, 1187455), (20, 949964), (31, 612880), (40, 474982), (47, 404240), (62, 306440), (80, 237491), (94, 202120), (124, 153220), (155, 122576), (163, 116560), (188, 101060), (235, 80848), (248, 76610), (310, 61288), (326, 58280), (376, 50530), (470, 40424), (496, 38305), (620, 30644), (652, 29140), (752, 25265), (815, 23312), (940, 20212), (1240, 15322), (1304, 14570), (1457, 13040), (1630, 11656), (1880, 10106), (2480, 7661), (2608, 7285), (2914, 6520), (3260, 5828), (3760, 5053)]