21326560

素因数分解:

$2^5\times 5^1\times {\mathrm{41}}^1\times {\mathrm{3251}}^1$

素因数の和:3307

約数の個数: 48

約数和(自身を含む): 51628752

約数和(自身を除く): 30302192

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 80, 82, 160, 164, 205, 328, 410, 656, 820, 1312, 1640, 3251, 3280, 6502, 6560, 13004, 16255, 26008, 32510, 52016, 65020, 104032, 130040, 133291, 260080, 266582, 520160, 533164, 666455, 1066328, 1332910, 2132656, 2665820, 4265312, 5331640, 10663280, 21326560]

約数ペア:

[(1, 21326560), (2, 10663280), (4, 5331640), (5, 4265312), (8, 2665820), (10, 2132656), (16, 1332910), (20, 1066328), (32, 666455), (40, 533164), (41, 520160), (80, 266582), (82, 260080), (160, 133291), (164, 130040), (205, 104032), (328, 65020), (410, 52016), (656, 32510), (820, 26008), (1312, 16255), (1640, 13004), (3251, 6560), (3280, 6502)]