81557425

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{73}}^1$

素因数の和:202

約数の個数: 48

約数和(自身を含む): 112314240

約数和(自身を除く): 30756815

約数列:

[1, 5, 23, 25, 29, 67, 73, 115, 145, 335, 365, 575, 667, 725, 1541, 1675, 1679, 1825, 1943, 2117, 3335, 4891, 7705, 8395, 9715, 10585, 16675, 24455, 38525, 41975, 44689, 48575, 48691, 52925, 112493, 122275, 141839, 223445, 243455, 562465, 709195, 1117225, 1217275, 2812325, 3262297, 3545975, 16311485, 81557425]

約数ペア:

[(1, 81557425), (5, 16311485), (23, 3545975), (25, 3262297), (29, 2812325), (67, 1217275), (73, 1117225), (115, 709195), (145, 562465), (335, 243455), (365, 223445), (575, 141839), (667, 122275), (725, 112493), (1541, 52925), (1675, 48691), (1679, 48575), (1825, 44689), (1943, 41975), (2117, 38525), (3335, 24455), (4891, 16675), (7705, 10585), (8395, 9715)]