21285120

素因数分解:

$2^8\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{241}}^1$

素因数の和:288

約数の個数: 144

約数和(自身を含む): 71229312

約数和(自身を除く): 49944192

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 23, 24, 30, 32, 40, 46, 48, 60, 64, 69, 80, 92, 96, 115, 120, 128, 138, 160, 184, 192, 230, 240, 241, 256, 276, 320, 345, 368, 384, 460, 480, 482, 552, 640, 690, 723, 736, 768, 920, 960, 964, 1104, 1205, 1280, 1380, 1446, 1472, 1840, 1920, 1928, 2208, 2410, 2760, 2892, 2944, 3615, 3680, 3840, 3856, 4416, 4820, 5520, 5543, 5784, 5888, 7230, 7360, 7712, 8832, 9640, 11040, 11086, 11568, 14460, 14720, 15424, 16629, 17664, 19280, 22080, 22172, 23136, 27715, 28920, 29440, 30848, 33258, 38560, 44160, 44344, 46272, 55430, 57840, 61696, 66516, 77120, 83145, 88320, 88688, 92544, 110860, 115680, 133032, 154240, 166290, 177376, 185088, 221720, 231360, 266064, 308480, 332580, 354752, 443440, 462720, 532128, 665160, 709504, 886880, 925440, 1064256, 1330320, 1419008, 1773760, 2128512, 2660640, 3547520, 4257024, 5321280, 7095040, 10642560, 21285120]

約数ペア:

[(1, 21285120), (2, 10642560), (3, 7095040), (4, 5321280), (5, 4257024), (6, 3547520), (8, 2660640), (10, 2128512), (12, 1773760), (15, 1419008), (16, 1330320), (20, 1064256), (23, 925440), (24, 886880), (30, 709504), (32, 665160), (40, 532128), (46, 462720), (48, 443440), (60, 354752), (64, 332580), (69, 308480), (80, 266064), (92, 231360), (96, 221720), (115, 185088), (120, 177376), (128, 166290), (138, 154240), (160, 133032), (184, 115680), (192, 110860), (230, 92544), (240, 88688), (241, 88320), (256, 83145), (276, 77120), (320, 66516), (345, 61696), (368, 57840), (384, 55430), (460, 46272), (480, 44344), (482, 44160), (552, 38560), (640, 33258), (690, 30848), (723, 29440), (736, 28920), (768, 27715), (920, 23136), (960, 22172), (964, 22080), (1104, 19280), (1205, 17664), (1280, 16629), (1380, 15424), (1446, 14720), (1472, 14460), (1840, 11568), (1920, 11086), (1928, 11040), (2208, 9640), (2410, 8832), (2760, 7712), (2892, 7360), (2944, 7230), (3615, 5888), (3680, 5784), (3840, 5543), (3856, 5520), (4416, 4820)]