74635420

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{997}}^1$

素因数の和:1222

約数の個数: 48

約数和(自身を含む): 165987360

約数和(自身を除く): 91351940

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 197, 380, 394, 788, 985, 997, 1970, 1994, 3743, 3940, 3988, 4985, 7486, 9970, 14972, 18715, 18943, 19940, 37430, 37886, 74860, 75772, 94715, 189430, 196409, 378860, 392818, 785636, 982045, 1964090, 3731771, 3928180, 7463542, 14927084, 18658855, 37317710, 74635420]

約数ペア:

[(1, 74635420), (2, 37317710), (4, 18658855), (5, 14927084), (10, 7463542), (19, 3928180), (20, 3731771), (38, 1964090), (76, 982045), (95, 785636), (190, 392818), (197, 378860), (380, 196409), (394, 189430), (788, 94715), (985, 75772), (997, 74860), (1970, 37886), (1994, 37430), (3743, 19940), (3940, 18943), (3988, 18715), (4985, 14972), (7486, 9970)]