21712690

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{1409}}^1$

素因数の和:1506

約数の個数: 32

約数和(自身を含む): 41420160

約数和(自身を除く): 19707470

約数列:

[1, 2, 5, 10, 23, 46, 67, 115, 134, 230, 335, 670, 1409, 1541, 2818, 3082, 7045, 7705, 14090, 15410, 32407, 64814, 94403, 162035, 188806, 324070, 472015, 944030, 2171269, 4342538, 10856345, 21712690]

約数ペア:

[(1, 21712690), (2, 10856345), (5, 4342538), (10, 2171269), (23, 944030), (46, 472015), (67, 324070), (115, 188806), (134, 162035), (230, 94403), (335, 64814), (670, 32407), (1409, 15410), (1541, 14090), (2818, 7705), (3082, 7045)]