21498091780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{2137}}^1\times {\mathrm{4157}}^1$

素因数の和:6325

約数の個数: 72

約数和(自身を含む): 49658445144

約数和(自身を除く): 28160353364

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1210, 2137, 2420, 4157, 4274, 8314, 8548, 10685, 16628, 20785, 21370, 23507, 41570, 42740, 45727, 47014, 83140, 91454, 94028, 117535, 182908, 228635, 235070, 258577, 457270, 470140, 502997, 517154, 914540, 1005994, 1034308, 1292885, 2011988, 2514985, 2585770, 5029970, 5171540, 8883509, 10059940, 17767018, 35534036, 44417545, 88835090, 97718599, 177670180, 195437198, 390874396, 488592995, 977185990, 1074904589, 1954371980, 2149809178, 4299618356, 5374522945, 10749045890, 21498091780]

約数ペア:

[(1, 21498091780), (2, 10749045890), (4, 5374522945), (5, 4299618356), (10, 2149809178), (11, 1954371980), (20, 1074904589), (22, 977185990), (44, 488592995), (55, 390874396), (110, 195437198), (121, 177670180), (220, 97718599), (242, 88835090), (484, 44417545), (605, 35534036), (1210, 17767018), (2137, 10059940), (2420, 8883509), (4157, 5171540), (4274, 5029970), (8314, 2585770), (8548, 2514985), (10685, 2011988), (16628, 1292885), (20785, 1034308), (21370, 1005994), (23507, 914540), (41570, 517154), (42740, 502997), (45727, 470140), (47014, 457270), (83140, 258577), (91454, 235070), (94028, 228635), (117535, 182908)]