21735720

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{173}}^1\times {\mathrm{349}}^1$

素因数の和:539

約数の個数: 96

約数和(自身を含む): 71253000

約数和(自身を除く): 49517280

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 173, 180, 346, 349, 360, 519, 692, 698, 865, 1038, 1047, 1384, 1396, 1557, 1730, 1745, 2076, 2094, 2595, 2792, 3114, 3141, 3460, 3490, 4152, 4188, 5190, 5235, 6228, 6282, 6920, 6980, 7785, 8376, 10380, 10470, 12456, 12564, 13960, 15570, 15705, 20760, 20940, 25128, 31140, 31410, 41880, 60377, 62280, 62820, 120754, 125640, 181131, 241508, 301885, 362262, 483016, 543393, 603770, 724524, 905655, 1086786, 1207540, 1449048, 1811310, 2173572, 2415080, 2716965, 3622620, 4347144, 5433930, 7245240, 10867860, 21735720]

約数ペア:

[(1, 21735720), (2, 10867860), (3, 7245240), (4, 5433930), (5, 4347144), (6, 3622620), (8, 2716965), (9, 2415080), (10, 2173572), (12, 1811310), (15, 1449048), (18, 1207540), (20, 1086786), (24, 905655), (30, 724524), (36, 603770), (40, 543393), (45, 483016), (60, 362262), (72, 301885), (90, 241508), (120, 181131), (173, 125640), (180, 120754), (346, 62820), (349, 62280), (360, 60377), (519, 41880), (692, 31410), (698, 31140), (865, 25128), (1038, 20940), (1047, 20760), (1384, 15705), (1396, 15570), (1557, 13960), (1730, 12564), (1745, 12456), (2076, 10470), (2094, 10380), (2595, 8376), (2792, 7785), (3114, 6980), (3141, 6920), (3460, 6282), (3490, 6228), (4152, 5235), (4188, 5190)]