21390330

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{4219}}^1$

素因数の和:4255

約数の個数: 48

約数和(自身を含む): 55602720

約数和(自身を除く): 34212390

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 169, 195, 338, 390, 507, 845, 1014, 1690, 2535, 4219, 5070, 8438, 12657, 21095, 25314, 42190, 54847, 63285, 109694, 126570, 164541, 274235, 329082, 548470, 713011, 822705, 1426022, 1645410, 2139033, 3565055, 4278066, 7130110, 10695165, 21390330]

約数ペア:

[(1, 21390330), (2, 10695165), (3, 7130110), (5, 4278066), (6, 3565055), (10, 2139033), (13, 1645410), (15, 1426022), (26, 822705), (30, 713011), (39, 548470), (65, 329082), (78, 274235), (130, 164541), (169, 126570), (195, 109694), (338, 63285), (390, 54847), (507, 42190), (845, 25314), (1014, 21095), (1690, 12657), (2535, 8438), (4219, 5070)]