21396570

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{661}}^1$

素因数の和:767

約数の個数: 64

約数和(自身を含む): 56052864

約数和(自身を除く): 34656294

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 83, 130, 166, 195, 249, 390, 415, 498, 661, 830, 1079, 1245, 1322, 1983, 2158, 2490, 3237, 3305, 3966, 5395, 6474, 6610, 8593, 9915, 10790, 16185, 17186, 19830, 25779, 32370, 42965, 51558, 54863, 85930, 109726, 128895, 164589, 257790, 274315, 329178, 548630, 713219, 822945, 1426438, 1645890, 2139657, 3566095, 4279314, 7132190, 10698285, 21396570]

約数ペア:

[(1, 21396570), (2, 10698285), (3, 7132190), (5, 4279314), (6, 3566095), (10, 2139657), (13, 1645890), (15, 1426438), (26, 822945), (30, 713219), (39, 548630), (65, 329178), (78, 274315), (83, 257790), (130, 164589), (166, 128895), (195, 109726), (249, 85930), (390, 54863), (415, 51558), (498, 42965), (661, 32370), (830, 25779), (1079, 19830), (1245, 17186), (1322, 16185), (1983, 10790), (2158, 9915), (2490, 8593), (3237, 6610), (3305, 6474), (3966, 5395)]