21344860

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{937}}^1$

素因数の和:1030

約数の個数: 48

約数和(自身を含む): 48220704

約数和(自身を除く): 26875844

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 67, 68, 85, 134, 170, 268, 335, 340, 670, 937, 1139, 1340, 1874, 2278, 3748, 4556, 4685, 5695, 9370, 11390, 15929, 18740, 22780, 31858, 62779, 63716, 79645, 125558, 159290, 251116, 313895, 318580, 627790, 1067243, 1255580, 2134486, 4268972, 5336215, 10672430, 21344860]

約数ペア:

[(1, 21344860), (2, 10672430), (4, 5336215), (5, 4268972), (10, 2134486), (17, 1255580), (20, 1067243), (34, 627790), (67, 318580), (68, 313895), (85, 251116), (134, 159290), (170, 125558), (268, 79645), (335, 63716), (340, 62779), (670, 31858), (937, 22780), (1139, 18740), (1340, 15929), (1874, 11390), (2278, 9370), (3748, 5695), (4556, 4685)]