21526845

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1$

素因数の和:166

約数の個数: 64

約数和(自身を含む): 39191040

約数和(自身を除く): 17664195

約数列:

[1, 3, 5, 15, 17, 29, 41, 51, 71, 85, 87, 123, 145, 205, 213, 255, 355, 435, 493, 615, 697, 1065, 1189, 1207, 1479, 2059, 2091, 2465, 2911, 3485, 3567, 3621, 5945, 6035, 6177, 7395, 8733, 10295, 10455, 14555, 17835, 18105, 20213, 30885, 35003, 43665, 49487, 60639, 84419, 101065, 105009, 148461, 175015, 247435, 253257, 303195, 422095, 525045, 742305, 1266285, 1435123, 4305369, 7175615, 21526845]

約数ペア:

[(1, 21526845), (3, 7175615), (5, 4305369), (15, 1435123), (17, 1266285), (29, 742305), (41, 525045), (51, 422095), (71, 303195), (85, 253257), (87, 247435), (123, 175015), (145, 148461), (205, 105009), (213, 101065), (255, 84419), (355, 60639), (435, 49487), (493, 43665), (615, 35003), (697, 30885), (1065, 20213), (1189, 18105), (1207, 17835), (1479, 14555), (2059, 10455), (2091, 10295), (2465, 8733), (2911, 7395), (3485, 6177), (3567, 6035), (3621, 5945)]