20245480

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{563}}^1$

素因数の和:634

約数の個数: 64

約数和(自身を含む): 48729600

約数和(自身を除く): 28484120

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 31, 40, 58, 62, 116, 124, 145, 155, 232, 248, 290, 310, 563, 580, 620, 899, 1126, 1160, 1240, 1798, 2252, 2815, 3596, 4495, 4504, 5630, 7192, 8990, 11260, 16327, 17453, 17980, 22520, 32654, 34906, 35960, 65308, 69812, 81635, 87265, 130616, 139624, 163270, 174530, 326540, 349060, 506137, 653080, 698120, 1012274, 2024548, 2530685, 4049096, 5061370, 10122740, 20245480]

約数ペア:

[(1, 20245480), (2, 10122740), (4, 5061370), (5, 4049096), (8, 2530685), (10, 2024548), (20, 1012274), (29, 698120), (31, 653080), (40, 506137), (58, 349060), (62, 326540), (116, 174530), (124, 163270), (145, 139624), (155, 130616), (232, 87265), (248, 81635), (290, 69812), (310, 65308), (563, 35960), (580, 34906), (620, 32654), (899, 22520), (1126, 17980), (1160, 17453), (1240, 16327), (1798, 11260), (2252, 8990), (2815, 7192), (3596, 5630), (4495, 4504)]