20919248

素因数分解:

$2^4\times 7^1\times {\mathrm{17}}^1\times {\mathrm{10987}}^1$

素因数の和:11019

約数の個数: 40

約数和(自身を含む): 49050432

約数和(自身を除く): 28131184

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 34, 56, 68, 112, 119, 136, 238, 272, 476, 952, 1904, 10987, 21974, 43948, 76909, 87896, 153818, 175792, 186779, 307636, 373558, 615272, 747116, 1230544, 1307453, 1494232, 2614906, 2988464, 5229812, 10459624, 20919248]

約数ペア:

[(1, 20919248), (2, 10459624), (4, 5229812), (7, 2988464), (8, 2614906), (14, 1494232), (16, 1307453), (17, 1230544), (28, 747116), (34, 615272), (56, 373558), (68, 307636), (112, 186779), (119, 175792), (136, 153818), (238, 87896), (272, 76909), (476, 43948), (952, 21974), (1904, 10987)]