21933980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{293}}^1$

素因数の和:518

約数の個数: 48

約数和(自身を含む): 48898080

約数和(自身を除く): 26964100

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 197, 293, 380, 394, 586, 788, 985, 1172, 1465, 1970, 2930, 3743, 3940, 5567, 5860, 7486, 11134, 14972, 18715, 22268, 27835, 37430, 55670, 57721, 74860, 111340, 115442, 230884, 288605, 577210, 1096699, 1154420, 2193398, 4386796, 5483495, 10966990, 21933980]

約数ペア:

[(1, 21933980), (2, 10966990), (4, 5483495), (5, 4386796), (10, 2193398), (19, 1154420), (20, 1096699), (38, 577210), (76, 288605), (95, 230884), (190, 115442), (197, 111340), (293, 74860), (380, 57721), (394, 55670), (586, 37430), (788, 27835), (985, 22268), (1172, 18715), (1465, 14972), (1970, 11134), (2930, 7486), (3743, 5860), (3940, 5567)]