21897840

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{3967}}^1$

素因数の和:4006

約数の個数: 80

約数和(自身を含む): 70852608

約数和(自身を除く): 48954768

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 23, 24, 30, 40, 46, 48, 60, 69, 80, 92, 115, 120, 138, 184, 230, 240, 276, 345, 368, 460, 552, 690, 920, 1104, 1380, 1840, 2760, 3967, 5520, 7934, 11901, 15868, 19835, 23802, 31736, 39670, 47604, 59505, 63472, 79340, 91241, 95208, 119010, 158680, 182482, 190416, 238020, 273723, 317360, 364964, 456205, 476040, 547446, 729928, 912410, 952080, 1094892, 1368615, 1459856, 1824820, 2189784, 2737230, 3649640, 4379568, 5474460, 7299280, 10948920, 21897840]

約数ペア:

[(1, 21897840), (2, 10948920), (3, 7299280), (4, 5474460), (5, 4379568), (6, 3649640), (8, 2737230), (10, 2189784), (12, 1824820), (15, 1459856), (16, 1368615), (20, 1094892), (23, 952080), (24, 912410), (30, 729928), (40, 547446), (46, 476040), (48, 456205), (60, 364964), (69, 317360), (80, 273723), (92, 238020), (115, 190416), (120, 182482), (138, 158680), (184, 119010), (230, 95208), (240, 91241), (276, 79340), (345, 63472), (368, 59505), (460, 47604), (552, 39670), (690, 31736), (920, 23802), (1104, 19835), (1380, 15868), (1840, 11901), (2760, 7934), (3967, 5520)]