21081360

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{5167}}^1$

素因数の和:5200

約数の個数: 80

約数和(自身を含む): 69209856

約数和(自身を除く): 48128496

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, 30, 34, 40, 48, 51, 60, 68, 80, 85, 102, 120, 136, 170, 204, 240, 255, 272, 340, 408, 510, 680, 816, 1020, 1360, 2040, 4080, 5167, 10334, 15501, 20668, 25835, 31002, 41336, 51670, 62004, 77505, 82672, 87839, 103340, 124008, 155010, 175678, 206680, 248016, 263517, 310020, 351356, 413360, 439195, 527034, 620040, 702712, 878390, 1054068, 1240080, 1317585, 1405424, 1756780, 2108136, 2635170, 3513560, 4216272, 5270340, 7027120, 10540680, 21081360]

約数ペア:

[(1, 21081360), (2, 10540680), (3, 7027120), (4, 5270340), (5, 4216272), (6, 3513560), (8, 2635170), (10, 2108136), (12, 1756780), (15, 1405424), (16, 1317585), (17, 1240080), (20, 1054068), (24, 878390), (30, 702712), (34, 620040), (40, 527034), (48, 439195), (51, 413360), (60, 351356), (68, 310020), (80, 263517), (85, 248016), (102, 206680), (120, 175678), (136, 155010), (170, 124008), (204, 103340), (240, 87839), (255, 82672), (272, 77505), (340, 62004), (408, 51670), (510, 41336), (680, 31002), (816, 25835), (1020, 20668), (1360, 15501), (2040, 10334), (4080, 5167)]