21897040

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{167}}^1$

素因数の和:340

約数の個数: 80

約数和(自身を含む): 56246400

約数和(自身を除く): 34349360

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 149, 167, 176, 220, 298, 334, 440, 596, 668, 745, 835, 880, 1192, 1336, 1490, 1639, 1670, 1837, 2384, 2672, 2980, 3278, 3340, 3674, 5960, 6556, 6680, 7348, 8195, 9185, 11920, 13112, 13360, 14696, 16390, 18370, 24883, 26224, 29392, 32780, 36740, 49766, 65560, 73480, 99532, 124415, 131120, 146960, 199064, 248830, 273713, 398128, 497660, 547426, 995320, 1094852, 1368565, 1990640, 2189704, 2737130, 4379408, 5474260, 10948520, 21897040]

約数ペア:

[(1, 21897040), (2, 10948520), (4, 5474260), (5, 4379408), (8, 2737130), (10, 2189704), (11, 1990640), (16, 1368565), (20, 1094852), (22, 995320), (40, 547426), (44, 497660), (55, 398128), (80, 273713), (88, 248830), (110, 199064), (149, 146960), (167, 131120), (176, 124415), (220, 99532), (298, 73480), (334, 65560), (440, 49766), (596, 36740), (668, 32780), (745, 29392), (835, 26224), (880, 24883), (1192, 18370), (1336, 16390), (1490, 14696), (1639, 13360), (1670, 13112), (1837, 11920), (2384, 9185), (2672, 8195), (2980, 7348), (3278, 6680), (3340, 6556), (3674, 5960)]