20123687975

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{12611}}^1$

素因数の和:12752

約数の個数: 48

約数和(自身を含む): 27023984640

約数和(自身を除く): 6900296665

約数列:

[1, 5, 25, 29, 31, 71, 145, 155, 355, 725, 775, 899, 1775, 2059, 2201, 4495, 10295, 11005, 12611, 22475, 51475, 55025, 63055, 63829, 315275, 319145, 365719, 390941, 895381, 1595725, 1828595, 1954705, 4476905, 9142975, 9773525, 11337289, 22384525, 25966049, 27756811, 56686445, 129830245, 138784055, 283432225, 649151225, 693920275, 804947519, 4024737595, 20123687975]

約数ペア:

[(1, 20123687975), (5, 4024737595), (25, 804947519), (29, 693920275), (31, 649151225), (71, 283432225), (145, 138784055), (155, 129830245), (355, 56686445), (725, 27756811), (775, 25966049), (899, 22384525), (1775, 11337289), (2059, 9773525), (2201, 9142975), (4495, 4476905), (10295, 1954705), (11005, 1828595), (12611, 1595725), (22475, 895381), (51475, 390941), (55025, 365719), (63055, 319145), (63829, 315275)]