20009172460

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{2289379}}^1$

素因数の和:2289430

約数の個数: 48

約数和(自身を含む): 46153900800

約数和(自身を除く): 26144728340

約数列:

[1, 2, 4, 5, 10, 19, 20, 23, 38, 46, 76, 92, 95, 115, 190, 230, 380, 437, 460, 874, 1748, 2185, 4370, 8740, 2289379, 4578758, 9157516, 11446895, 22893790, 43498201, 45787580, 52655717, 86996402, 105311434, 173992804, 210622868, 217491005, 263278585, 434982010, 526557170, 869964020, 1000458623, 1053114340, 2000917246, 4001834492, 5002293115, 10004586230, 20009172460]

約数ペア:

[(1, 20009172460), (2, 10004586230), (4, 5002293115), (5, 4001834492), (10, 2000917246), (19, 1053114340), (20, 1000458623), (23, 869964020), (38, 526557170), (46, 434982010), (76, 263278585), (92, 217491005), (95, 210622868), (115, 173992804), (190, 105311434), (230, 86996402), (380, 52655717), (437, 45787580), (460, 43498201), (874, 22893790), (1748, 11446895), (2185, 9157516), (4370, 4578758), (8740, 2289379)]