1388295220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1373}}^1\times {\mathrm{3889}}^1$

素因数の和:5284

約数の個数: 48

約数和(自身を含む): 3142777680

約数和(自身を除く): 1754482460

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 1373, 2746, 3889, 5492, 6865, 7778, 13730, 15556, 17849, 19445, 27460, 35698, 38890, 50557, 71396, 77780, 89245, 101114, 178490, 202228, 252785, 356980, 505570, 1011140, 5339597, 10679194, 21358388, 26697985, 53395970, 69414761, 106791940, 138829522, 277659044, 347073805, 694147610, 1388295220]

約数ペア:

[(1, 1388295220), (2, 694147610), (4, 347073805), (5, 277659044), (10, 138829522), (13, 106791940), (20, 69414761), (26, 53395970), (52, 26697985), (65, 21358388), (130, 10679194), (260, 5339597), (1373, 1011140), (2746, 505570), (3889, 356980), (5492, 252785), (6865, 202228), (7778, 178490), (13730, 101114), (15556, 89245), (17849, 77780), (19445, 71396), (27460, 50557), (35698, 38890)]