18919920

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{2543}}^1$

素因数の和:2590

約数の個数: 80

約数和(自身を含む): 60567552

約数和(自身を除く): 41647632

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 31, 40, 48, 60, 62, 80, 93, 120, 124, 155, 186, 240, 248, 310, 372, 465, 496, 620, 744, 930, 1240, 1488, 1860, 2480, 2543, 3720, 5086, 7440, 7629, 10172, 12715, 15258, 20344, 25430, 30516, 38145, 40688, 50860, 61032, 76290, 78833, 101720, 122064, 152580, 157666, 203440, 236499, 305160, 315332, 394165, 472998, 610320, 630664, 788330, 945996, 1182495, 1261328, 1576660, 1891992, 2364990, 3153320, 3783984, 4729980, 6306640, 9459960, 18919920]

約数ペア:

[(1, 18919920), (2, 9459960), (3, 6306640), (4, 4729980), (5, 3783984), (6, 3153320), (8, 2364990), (10, 1891992), (12, 1576660), (15, 1261328), (16, 1182495), (20, 945996), (24, 788330), (30, 630664), (31, 610320), (40, 472998), (48, 394165), (60, 315332), (62, 305160), (80, 236499), (93, 203440), (120, 157666), (124, 152580), (155, 122064), (186, 101720), (240, 78833), (248, 76290), (310, 61032), (372, 50860), (465, 40688), (496, 38145), (620, 30516), (744, 25430), (930, 20344), (1240, 15258), (1488, 12715), (1860, 10172), (2480, 7629), (2543, 7440), (3720, 5086)]