28740760

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{11779}}^1$

素因数の和:11851

約数の個数: 32

約数和(自身を含む): 65732400

約数和(自身を除く): 36991640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 11779, 23558, 47116, 58895, 94232, 117790, 235580, 471160, 718519, 1437038, 2874076, 3592595, 5748152, 7185190, 14370380, 28740760]

約数ペア:

[(1, 28740760), (2, 14370380), (4, 7185190), (5, 5748152), (8, 3592595), (10, 2874076), (20, 1437038), (40, 718519), (61, 471160), (122, 235580), (244, 117790), (305, 94232), (488, 58895), (610, 47116), (1220, 23558), (2440, 11779)]