21806940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{5119}}^1$

素因数の和:5202

約数の個数: 48

約数和(自身を含む): 61931520

約数和(自身を除く): 40124580

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 71, 142, 213, 284, 355, 426, 710, 852, 1065, 1420, 2130, 4260, 5119, 10238, 15357, 20476, 25595, 30714, 51190, 61428, 76785, 102380, 153570, 307140, 363449, 726898, 1090347, 1453796, 1817245, 2180694, 3634490, 4361388, 5451735, 7268980, 10903470, 21806940]

約数ペア:

[(1, 21806940), (2, 10903470), (3, 7268980), (4, 5451735), (5, 4361388), (6, 3634490), (10, 2180694), (12, 1817245), (15, 1453796), (20, 1090347), (30, 726898), (60, 363449), (71, 307140), (142, 153570), (213, 102380), (284, 76785), (355, 61428), (426, 51190), (710, 30714), (852, 25595), (1065, 20476), (1420, 15357), (2130, 10238), (4260, 5119)]