20218497580

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{829}}^1\times {\mathrm{19991}}^1$

素因数の和:20890

約数の個数: 48

約数和(自身を含む): 43209109440

約数和(自身を除く): 22990611860

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 829, 1220, 1658, 3316, 4145, 8290, 16580, 19991, 39982, 50569, 79964, 99955, 101138, 199910, 202276, 252845, 399820, 505690, 1011380, 1219451, 2438902, 4877804, 6097255, 12194510, 16572539, 24389020, 33145078, 66290156, 82862695, 165725390, 331450780, 1010924879, 2021849758, 4043699516, 5054624395, 10109248790, 20218497580]

約数ペア:

[(1, 20218497580), (2, 10109248790), (4, 5054624395), (5, 4043699516), (10, 2021849758), (20, 1010924879), (61, 331450780), (122, 165725390), (244, 82862695), (305, 66290156), (610, 33145078), (829, 24389020), (1220, 16572539), (1658, 12194510), (3316, 6097255), (4145, 4877804), (8290, 2438902), (16580, 1219451), (19991, 1011380), (39982, 505690), (50569, 399820), (79964, 252845), (99955, 202276), (101138, 199910)]