20981880

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{167}}^1\times {\mathrm{349}}^1$

素因数の和:533

約数の個数: 96

約数和(自身を含む): 68796000

約数和(自身を除く): 47814120

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, 167, 180, 334, 349, 360, 501, 668, 698, 835, 1002, 1047, 1336, 1396, 1503, 1670, 1745, 2004, 2094, 2505, 2792, 3006, 3141, 3340, 3490, 4008, 4188, 5010, 5235, 6012, 6282, 6680, 6980, 7515, 8376, 10020, 10470, 12024, 12564, 13960, 15030, 15705, 20040, 20940, 25128, 30060, 31410, 41880, 58283, 60120, 62820, 116566, 125640, 174849, 233132, 291415, 349698, 466264, 524547, 582830, 699396, 874245, 1049094, 1165660, 1398792, 1748490, 2098188, 2331320, 2622735, 3496980, 4196376, 5245470, 6993960, 10490940, 20981880]

約数ペア:

[(1, 20981880), (2, 10490940), (3, 6993960), (4, 5245470), (5, 4196376), (6, 3496980), (8, 2622735), (9, 2331320), (10, 2098188), (12, 1748490), (15, 1398792), (18, 1165660), (20, 1049094), (24, 874245), (30, 699396), (36, 582830), (40, 524547), (45, 466264), (60, 349698), (72, 291415), (90, 233132), (120, 174849), (167, 125640), (180, 116566), (334, 62820), (349, 60120), (360, 58283), (501, 41880), (668, 31410), (698, 30060), (835, 25128), (1002, 20940), (1047, 20040), (1336, 15705), (1396, 15030), (1503, 13960), (1670, 12564), (1745, 12024), (2004, 10470), (2094, 10020), (2505, 8376), (2792, 7515), (3006, 6980), (3141, 6680), (3340, 6282), (3490, 6012), (4008, 5235), (4188, 5010)]