20201560

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^2\times {\mathrm{1399}}^1$

素因数の和:1448

約数の個数: 48

約数和(自身を含む): 48006000

約数和(自身を除く): 27804440

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 361, 380, 722, 760, 1399, 1444, 1805, 2798, 2888, 3610, 5596, 6995, 7220, 11192, 13990, 14440, 26581, 27980, 53162, 55960, 106324, 132905, 212648, 265810, 505039, 531620, 1010078, 1063240, 2020156, 2525195, 4040312, 5050390, 10100780, 20201560]

約数ペア:

[(1, 20201560), (2, 10100780), (4, 5050390), (5, 4040312), (8, 2525195), (10, 2020156), (19, 1063240), (20, 1010078), (38, 531620), (40, 505039), (76, 265810), (95, 212648), (152, 132905), (190, 106324), (361, 55960), (380, 53162), (722, 27980), (760, 26581), (1399, 14440), (1444, 13990), (1805, 11192), (2798, 7220), (2888, 6995), (3610, 5596)]