205765100

素因数分解:

$2^2\times 5^2\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{397}}^1$

素因数の和:555

約数の個数: 72

約数和(自身を含む): 460158048

約数和(自身を除く): 254392948

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 71, 73, 100, 142, 146, 284, 292, 355, 365, 397, 710, 730, 794, 1420, 1460, 1588, 1775, 1825, 1985, 3550, 3650, 3970, 5183, 7100, 7300, 7940, 9925, 10366, 19850, 20732, 25915, 28187, 28981, 39700, 51830, 56374, 57962, 103660, 112748, 115924, 129575, 140935, 144905, 259150, 281870, 289810, 518300, 563740, 579620, 704675, 724525, 1409350, 1449050, 2057651, 2818700, 2898100, 4115302, 8230604, 10288255, 20576510, 41153020, 51441275, 102882550, 205765100]

約数ペア:

[(1, 205765100), (2, 102882550), (4, 51441275), (5, 41153020), (10, 20576510), (20, 10288255), (25, 8230604), (50, 4115302), (71, 2898100), (73, 2818700), (100, 2057651), (142, 1449050), (146, 1409350), (284, 724525), (292, 704675), (355, 579620), (365, 563740), (397, 518300), (710, 289810), (730, 281870), (794, 259150), (1420, 144905), (1460, 140935), (1588, 129575), (1775, 115924), (1825, 112748), (1985, 103660), (3550, 57962), (3650, 56374), (3970, 51830), (5183, 39700), (7100, 28981), (7300, 28187), (7940, 25915), (9925, 20732), (10366, 19850)]