19918912

素因数分解:

$2^6\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{269}}^1$

素因数の和:383

約数の個数: 56

約数和(自身を含む): 43205400

約数和(自身を除く): 23286488

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 89, 104, 178, 208, 269, 356, 416, 538, 712, 832, 1076, 1157, 1424, 2152, 2314, 2848, 3497, 4304, 4628, 5696, 6994, 8608, 9256, 13988, 17216, 18512, 23941, 27976, 37024, 47882, 55952, 74048, 95764, 111904, 191528, 223808, 311233, 383056, 622466, 766112, 1244932, 1532224, 2489864, 4979728, 9959456, 19918912]

約数ペア:

[(1, 19918912), (2, 9959456), (4, 4979728), (8, 2489864), (13, 1532224), (16, 1244932), (26, 766112), (32, 622466), (52, 383056), (64, 311233), (89, 223808), (104, 191528), (178, 111904), (208, 95764), (269, 74048), (356, 55952), (416, 47882), (538, 37024), (712, 27976), (832, 23941), (1076, 18512), (1157, 17216), (1424, 13988), (2152, 9256), (2314, 8608), (2848, 6994), (3497, 5696), (4304, 4628)]