20758880

素因数分解:

$2^5\times 5^1\times {\mathrm{23}}^1\times {\mathrm{5641}}^1$

素因数の和:5679

約数の個数: 48

約数和(自身を含む): 51184224

約数和(自身を除く): 30425344

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 80, 92, 115, 160, 184, 230, 368, 460, 736, 920, 1840, 3680, 5641, 11282, 22564, 28205, 45128, 56410, 90256, 112820, 129743, 180512, 225640, 259486, 451280, 518972, 648715, 902560, 1037944, 1297430, 2075888, 2594860, 4151776, 5189720, 10379440, 20758880]

約数ペア:

[(1, 20758880), (2, 10379440), (4, 5189720), (5, 4151776), (8, 2594860), (10, 2075888), (16, 1297430), (20, 1037944), (23, 902560), (32, 648715), (40, 518972), (46, 451280), (80, 259486), (92, 225640), (115, 180512), (160, 129743), (184, 112820), (230, 90256), (368, 56410), (460, 45128), (736, 28205), (920, 22564), (1840, 11282), (3680, 5641)]