21251520

素因数分解:

$2^6\times 3^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{157}}^1$

素因数の和:227

約数の個数: 168

約数和(自身を含む): 75127104

約数和(自身を除く): 53875584

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 47, 48, 60, 64, 72, 80, 90, 94, 96, 120, 141, 144, 157, 160, 180, 188, 192, 235, 240, 282, 288, 314, 320, 360, 376, 423, 470, 471, 480, 564, 576, 628, 705, 720, 752, 785, 846, 940, 942, 960, 1128, 1256, 1410, 1413, 1440, 1504, 1570, 1692, 1880, 1884, 2115, 2256, 2355, 2512, 2820, 2826, 2880, 3008, 3140, 3384, 3760, 3768, 4230, 4512, 4710, 5024, 5640, 5652, 6280, 6768, 7065, 7379, 7520, 7536, 8460, 9024, 9420, 10048, 11280, 11304, 12560, 13536, 14130, 14758, 15040, 15072, 16920, 18840, 22137, 22560, 22608, 25120, 27072, 28260, 29516, 30144, 33840, 36895, 37680, 44274, 45120, 45216, 50240, 56520, 59032, 66411, 67680, 73790, 75360, 88548, 90432, 110685, 113040, 118064, 132822, 135360, 147580, 150720, 177096, 221370, 226080, 236128, 265644, 295160, 332055, 354192, 442740, 452160, 472256, 531288, 590320, 664110, 708384, 885480, 1062576, 1180640, 1328220, 1416768, 1770960, 2125152, 2361280, 2656440, 3541920, 4250304, 5312880, 7083840, 10625760, 21251520]

約数ペア:

[(1, 21251520), (2, 10625760), (3, 7083840), (4, 5312880), (5, 4250304), (6, 3541920), (8, 2656440), (9, 2361280), (10, 2125152), (12, 1770960), (15, 1416768), (16, 1328220), (18, 1180640), (20, 1062576), (24, 885480), (30, 708384), (32, 664110), (36, 590320), (40, 531288), (45, 472256), (47, 452160), (48, 442740), (60, 354192), (64, 332055), (72, 295160), (80, 265644), (90, 236128), (94, 226080), (96, 221370), (120, 177096), (141, 150720), (144, 147580), (157, 135360), (160, 132822), (180, 118064), (188, 113040), (192, 110685), (235, 90432), (240, 88548), (282, 75360), (288, 73790), (314, 67680), (320, 66411), (360, 59032), (376, 56520), (423, 50240), (470, 45216), (471, 45120), (480, 44274), (564, 37680), (576, 36895), (628, 33840), (705, 30144), (720, 29516), (752, 28260), (785, 27072), (846, 25120), (940, 22608), (942, 22560), (960, 22137), (1128, 18840), (1256, 16920), (1410, 15072), (1413, 15040), (1440, 14758), (1504, 14130), (1570, 13536), (1692, 12560), (1880, 11304), (1884, 11280), (2115, 10048), (2256, 9420), (2355, 9024), (2512, 8460), (2820, 7536), (2826, 7520), (2880, 7379), (3008, 7065), (3140, 6768), (3384, 6280), (3760, 5652), (3768, 5640), (4230, 5024), (4512, 4710)]