28689520

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{5879}}^1$

素因数の和:5953

約数の個数: 40

約数和(自身を含む): 67808160

約数和(自身を除く): 39118640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4880, 5879, 11758, 23516, 29395, 47032, 58790, 94064, 117580, 235160, 358619, 470320, 717238, 1434476, 1793095, 2868952, 3586190, 5737904, 7172380, 14344760, 28689520]

約数ペア:

[(1, 28689520), (2, 14344760), (4, 7172380), (5, 5737904), (8, 3586190), (10, 2868952), (16, 1793095), (20, 1434476), (40, 717238), (61, 470320), (80, 358619), (122, 235160), (244, 117580), (305, 94064), (488, 58790), (610, 47032), (976, 29395), (1220, 23516), (2440, 11758), (4880, 5879)]