21299420

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{107}}^1\times {\mathrm{269}}^1$

素因数の和:422

約数の個数: 48

約数和(自身を含む): 46539360

約数和(自身を除く): 25239940

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 107, 148, 185, 214, 269, 370, 428, 535, 538, 740, 1070, 1076, 1345, 2140, 2690, 3959, 5380, 7918, 9953, 15836, 19795, 19906, 28783, 39590, 39812, 49765, 57566, 79180, 99530, 115132, 143915, 199060, 287830, 575660, 1064971, 2129942, 4259884, 5324855, 10649710, 21299420]

約数ペア:

[(1, 21299420), (2, 10649710), (4, 5324855), (5, 4259884), (10, 2129942), (20, 1064971), (37, 575660), (74, 287830), (107, 199060), (148, 143915), (185, 115132), (214, 99530), (269, 79180), (370, 57566), (428, 49765), (535, 39812), (538, 39590), (740, 28783), (1070, 19906), (1076, 19795), (1345, 15836), (2140, 9953), (2690, 7918), (3959, 5380)]