20866980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{15121}}^1$

素因数の和:15156

約数の個数: 48

約数和(自身を含む): 60971904

約数和(自身を除く): 40104924

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 23, 30, 46, 60, 69, 92, 115, 138, 230, 276, 345, 460, 690, 1380, 15121, 30242, 45363, 60484, 75605, 90726, 151210, 181452, 226815, 302420, 347783, 453630, 695566, 907260, 1043349, 1391132, 1738915, 2086698, 3477830, 4173396, 5216745, 6955660, 10433490, 20866980]

約数ペア:

[(1, 20866980), (2, 10433490), (3, 6955660), (4, 5216745), (5, 4173396), (6, 3477830), (10, 2086698), (12, 1738915), (15, 1391132), (20, 1043349), (23, 907260), (30, 695566), (46, 453630), (60, 347783), (69, 302420), (92, 226815), (115, 181452), (138, 151210), (230, 90726), (276, 75605), (345, 60484), (460, 45363), (690, 30242), (1380, 15121)]