21025560

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{83}}^1\times {\mathrm{2111}}^1$

素因数の和:2208

約数の個数: 64

約数和(自身を含む): 63866880

約数和(自身を除く): 42841320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 83, 120, 166, 249, 332, 415, 498, 664, 830, 996, 1245, 1660, 1992, 2111, 2490, 3320, 4222, 4980, 6333, 8444, 9960, 10555, 12666, 16888, 21110, 25332, 31665, 42220, 50664, 63330, 84440, 126660, 175213, 253320, 350426, 525639, 700852, 876065, 1051278, 1401704, 1752130, 2102556, 2628195, 3504260, 4205112, 5256390, 7008520, 10512780, 21025560]

約数ペア:

[(1, 21025560), (2, 10512780), (3, 7008520), (4, 5256390), (5, 4205112), (6, 3504260), (8, 2628195), (10, 2102556), (12, 1752130), (15, 1401704), (20, 1051278), (24, 876065), (30, 700852), (40, 525639), (60, 350426), (83, 253320), (120, 175213), (166, 126660), (249, 84440), (332, 63330), (415, 50664), (498, 42220), (664, 31665), (830, 25332), (996, 21110), (1245, 16888), (1660, 12666), (1992, 10555), (2111, 9960), (2490, 8444), (3320, 6333), (4222, 4980)]