21324550

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{619}}^1$

素因数の和:697

約数の個数: 48

約数和(自身を含む): 43590960

約数和(自身を除く): 22266410

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 53, 65, 106, 130, 265, 325, 530, 619, 650, 689, 1238, 1325, 1378, 2650, 3095, 3445, 6190, 6890, 8047, 15475, 16094, 17225, 30950, 32807, 34450, 40235, 65614, 80470, 164035, 201175, 328070, 402350, 426491, 820175, 852982, 1640350, 2132455, 4264910, 10662275, 21324550]

約数ペア:

[(1, 21324550), (2, 10662275), (5, 4264910), (10, 2132455), (13, 1640350), (25, 852982), (26, 820175), (50, 426491), (53, 402350), (65, 328070), (106, 201175), (130, 164035), (265, 80470), (325, 65614), (530, 40235), (619, 34450), (650, 32807), (689, 30950), (1238, 17225), (1325, 16094), (1378, 15475), (2650, 8047), (3095, 6890), (3445, 6190)]