21620936

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{1381}}^1$

素因数の和:1509

約数の個数: 32

約数和(自身を含む): 43118400

約数和(自身を除く): 21497464

約数列:

[1, 2, 4, 8, 19, 38, 76, 103, 152, 206, 412, 824, 1381, 1957, 2762, 3914, 5524, 7828, 11048, 15656, 26239, 52478, 104956, 142243, 209912, 284486, 568972, 1137944, 2702617, 5405234, 10810468, 21620936]

約数ペア:

[(1, 21620936), (2, 10810468), (4, 5405234), (8, 2702617), (19, 1137944), (38, 568972), (76, 284486), (103, 209912), (152, 142243), (206, 104956), (412, 52478), (824, 26239), (1381, 15656), (1957, 11048), (2762, 7828), (3914, 5524)]