19787456

素因数分解:

$2^6\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1399}}^1$

素因数の和:1441

約数の個数: 56

約数和(自身を含む): 44805600

約数和(自身を除く): 25018144

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 32, 34, 52, 64, 68, 104, 136, 208, 221, 272, 416, 442, 544, 832, 884, 1088, 1399, 1768, 2798, 3536, 5596, 7072, 11192, 14144, 18187, 22384, 23783, 36374, 44768, 47566, 72748, 89536, 95132, 145496, 190264, 290992, 309179, 380528, 581984, 618358, 761056, 1163968, 1236716, 1522112, 2473432, 4946864, 9893728, 19787456]

約数ペア:

[(1, 19787456), (2, 9893728), (4, 4946864), (8, 2473432), (13, 1522112), (16, 1236716), (17, 1163968), (26, 761056), (32, 618358), (34, 581984), (52, 380528), (64, 309179), (68, 290992), (104, 190264), (136, 145496), (208, 95132), (221, 89536), (272, 72748), (416, 47566), (442, 44768), (544, 36374), (832, 23783), (884, 22384), (1088, 18187), (1399, 14144), (1768, 11192), (2798, 7072), (3536, 5596)]