20654790

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{211}}^1\times {\mathrm{251}}^1$

素因数の和:485

約数の個数: 64

約数和(自身を含む): 53851392

約数和(自身を除く): 33196602

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 211, 251, 390, 422, 502, 633, 753, 1055, 1255, 1266, 1506, 2110, 2510, 2743, 3165, 3263, 3765, 5486, 6330, 6526, 7530, 8229, 9789, 13715, 16315, 16458, 19578, 27430, 32630, 41145, 48945, 52961, 82290, 97890, 105922, 158883, 264805, 317766, 529610, 688493, 794415, 1376986, 1588830, 2065479, 3442465, 4130958, 6884930, 10327395, 20654790]

約数ペア:

[(1, 20654790), (2, 10327395), (3, 6884930), (5, 4130958), (6, 3442465), (10, 2065479), (13, 1588830), (15, 1376986), (26, 794415), (30, 688493), (39, 529610), (65, 317766), (78, 264805), (130, 158883), (195, 105922), (211, 97890), (251, 82290), (390, 52961), (422, 48945), (502, 41145), (633, 32630), (753, 27430), (1055, 19578), (1255, 16458), (1266, 16315), (1506, 13715), (2110, 9789), (2510, 8229), (2743, 7530), (3165, 6526), (3263, 6330), (3765, 5486)]