20865204

素因数分解:

$2^2\times 3^2\times {\mathrm{83}}^1\times {\mathrm{6983}}^1$

素因数の和:7076

約数の個数: 36

約数和(自身を含む): 53385696

約数和(自身を除く): 32520492

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 83, 166, 249, 332, 498, 747, 996, 1494, 2988, 6983, 13966, 20949, 27932, 41898, 62847, 83796, 125694, 251388, 579589, 1159178, 1738767, 2318356, 3477534, 5216301, 6955068, 10432602, 20865204]

約数ペア:

[(1, 20865204), (2, 10432602), (3, 6955068), (4, 5216301), (6, 3477534), (9, 2318356), (12, 1738767), (18, 1159178), (36, 579589), (83, 251388), (166, 125694), (249, 83796), (332, 62847), (498, 41898), (747, 27932), (996, 20949), (1494, 13966), (2988, 6983)]