21019224

素因数分解:

$2^3\times 3^1\times {\mathrm{41}}^2\times {\mathrm{521}}^1$

素因数の和:612

約数の個数: 48

約数和(自身を含む): 53964360

約数和(自身を除く): 32945136

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 41, 82, 123, 164, 246, 328, 492, 521, 984, 1042, 1563, 1681, 2084, 3126, 3362, 4168, 5043, 6252, 6724, 10086, 12504, 13448, 20172, 21361, 40344, 42722, 64083, 85444, 128166, 170888, 256332, 512664, 875801, 1751602, 2627403, 3503204, 5254806, 7006408, 10509612, 21019224]

約数ペア:

[(1, 21019224), (2, 10509612), (3, 7006408), (4, 5254806), (6, 3503204), (8, 2627403), (12, 1751602), (24, 875801), (41, 512664), (82, 256332), (123, 170888), (164, 128166), (246, 85444), (328, 64083), (492, 42722), (521, 40344), (984, 21361), (1042, 20172), (1563, 13448), (1681, 12504), (2084, 10086), (3126, 6724), (3362, 6252), (4168, 5043)]