21005304

素因数分解:

$2^3\times 3^1\times {\mathrm{67}}^1\times {\mathrm{13063}}^1$

素因数の和:13139

約数の個数: 32

約数和(自身を含む): 53301120

約数和(自身を除く): 32295816

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 67, 134, 201, 268, 402, 536, 804, 1608, 13063, 26126, 39189, 52252, 78378, 104504, 156756, 313512, 875221, 1750442, 2625663, 3500884, 5251326, 7001768, 10502652, 21005304]

約数ペア:

[(1, 21005304), (2, 10502652), (3, 7001768), (4, 5251326), (6, 3500884), (8, 2625663), (12, 1750442), (24, 875221), (67, 313512), (134, 156756), (201, 104504), (268, 78378), (402, 52252), (536, 39189), (804, 26126), (1608, 13063)]