21582520

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^2\times {\mathrm{1867}}^1$

素因数の和:1912

約数の個数: 48

約数和(自身を含む): 51612840

約数和(自身を除く): 30030320

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 289, 340, 578, 680, 1156, 1445, 1867, 2312, 2890, 3734, 5780, 7468, 9335, 11560, 14936, 18670, 31739, 37340, 63478, 74680, 126956, 158695, 253912, 317390, 539563, 634780, 1079126, 1269560, 2158252, 2697815, 4316504, 5395630, 10791260, 21582520]

約数ペア:

[(1, 21582520), (2, 10791260), (4, 5395630), (5, 4316504), (8, 2697815), (10, 2158252), (17, 1269560), (20, 1079126), (34, 634780), (40, 539563), (68, 317390), (85, 253912), (136, 158695), (170, 126956), (289, 74680), (340, 63478), (578, 37340), (680, 31739), (1156, 18670), (1445, 14936), (1867, 11560), (2312, 9335), (2890, 7468), (3734, 5780)]