21893985

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{883}}^1$

素因数の和:942

約数の個数: 48

約数和(自身を含む): 41371200

約数和(自身を除く): 19477215

約数列:

[1, 3, 5, 9, 15, 19, 29, 45, 57, 87, 95, 145, 171, 261, 285, 435, 551, 855, 883, 1305, 1653, 2649, 2755, 4415, 4959, 7947, 8265, 13245, 16777, 24795, 25607, 39735, 50331, 76821, 83885, 128035, 150993, 230463, 251655, 384105, 486533, 754965, 1152315, 1459599, 2432665, 4378797, 7297995, 21893985]

約数ペア:

[(1, 21893985), (3, 7297995), (5, 4378797), (9, 2432665), (15, 1459599), (19, 1152315), (29, 754965), (45, 486533), (57, 384105), (87, 251655), (95, 230463), (145, 150993), (171, 128035), (261, 83885), (285, 76821), (435, 50331), (551, 39735), (855, 25607), (883, 24795), (1305, 16777), (1653, 13245), (2649, 8265), (2755, 7947), (4415, 4959)]