21450120

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{4157}}^1$

素因数の和:4214

約数の個数: 64

約数和(自身を含む): 65862720

約数和(自身を除く): 44412600

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 43, 60, 86, 120, 129, 172, 215, 258, 344, 430, 516, 645, 860, 1032, 1290, 1720, 2580, 4157, 5160, 8314, 12471, 16628, 20785, 24942, 33256, 41570, 49884, 62355, 83140, 99768, 124710, 166280, 178751, 249420, 357502, 498840, 536253, 715004, 893755, 1072506, 1430008, 1787510, 2145012, 2681265, 3575020, 4290024, 5362530, 7150040, 10725060, 21450120]

約数ペア:

[(1, 21450120), (2, 10725060), (3, 7150040), (4, 5362530), (5, 4290024), (6, 3575020), (8, 2681265), (10, 2145012), (12, 1787510), (15, 1430008), (20, 1072506), (24, 893755), (30, 715004), (40, 536253), (43, 498840), (60, 357502), (86, 249420), (120, 178751), (129, 166280), (172, 124710), (215, 99768), (258, 83140), (344, 62355), (430, 49884), (516, 41570), (645, 33256), (860, 24942), (1032, 20785), (1290, 16628), (1720, 12471), (2580, 8314), (4157, 5160)]