18506912

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{499}}^1$

素因数の和:589

約数の個数: 48

約数和(自身を含む): 39060000

約数和(自身を除く): 20553088

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 61, 76, 122, 152, 244, 304, 488, 499, 608, 976, 998, 1159, 1952, 1996, 2318, 3992, 4636, 7984, 9272, 9481, 15968, 18544, 18962, 30439, 37088, 37924, 60878, 75848, 121756, 151696, 243512, 303392, 487024, 578341, 974048, 1156682, 2313364, 4626728, 9253456, 18506912]

約数ペア:

[(1, 18506912), (2, 9253456), (4, 4626728), (8, 2313364), (16, 1156682), (19, 974048), (32, 578341), (38, 487024), (61, 303392), (76, 243512), (122, 151696), (152, 121756), (244, 75848), (304, 60878), (488, 37924), (499, 37088), (608, 30439), (976, 18962), (998, 18544), (1159, 15968), (1952, 9481), (1996, 9272), (2318, 7984), (3992, 4636)]