21475560

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{251}}^1$

素因数の和:319

約数の個数: 128

約数和(自身を含む): 69672960

約数和(自身を除く): 48197400

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 23, 24, 30, 31, 40, 46, 60, 62, 69, 92, 93, 115, 120, 124, 138, 155, 184, 186, 230, 248, 251, 276, 310, 345, 372, 460, 465, 502, 552, 620, 690, 713, 744, 753, 920, 930, 1004, 1240, 1255, 1380, 1426, 1506, 1860, 2008, 2139, 2510, 2760, 2852, 3012, 3565, 3720, 3765, 4278, 5020, 5704, 5773, 6024, 7130, 7530, 7781, 8556, 10040, 10695, 11546, 14260, 15060, 15562, 17112, 17319, 21390, 23092, 23343, 28520, 28865, 30120, 31124, 34638, 38905, 42780, 46184, 46686, 57730, 62248, 69276, 77810, 85560, 86595, 93372, 115460, 116715, 138552, 155620, 173190, 178963, 186744, 230920, 233430, 311240, 346380, 357926, 466860, 536889, 692760, 715852, 894815, 933720, 1073778, 1431704, 1789630, 2147556, 2684445, 3579260, 4295112, 5368890, 7158520, 10737780, 21475560]

約数ペア:

[(1, 21475560), (2, 10737780), (3, 7158520), (4, 5368890), (5, 4295112), (6, 3579260), (8, 2684445), (10, 2147556), (12, 1789630), (15, 1431704), (20, 1073778), (23, 933720), (24, 894815), (30, 715852), (31, 692760), (40, 536889), (46, 466860), (60, 357926), (62, 346380), (69, 311240), (92, 233430), (93, 230920), (115, 186744), (120, 178963), (124, 173190), (138, 155620), (155, 138552), (184, 116715), (186, 115460), (230, 93372), (248, 86595), (251, 85560), (276, 77810), (310, 69276), (345, 62248), (372, 57730), (460, 46686), (465, 46184), (502, 42780), (552, 38905), (620, 34638), (690, 31124), (713, 30120), (744, 28865), (753, 28520), (920, 23343), (930, 23092), (1004, 21390), (1240, 17319), (1255, 17112), (1380, 15562), (1426, 15060), (1506, 14260), (1860, 11546), (2008, 10695), (2139, 10040), (2510, 8556), (2760, 7781), (2852, 7530), (3012, 7130), (3565, 6024), (3720, 5773), (3765, 5704), (4278, 5020)]