21888560

素因数分解:

$2^4\times 5^1\times {\mathrm{419}}^1\times {\mathrm{653}}^1$

素因数の和:1085

約数の個数: 40

約数和(自身を含む): 51090480

約数和(自身を除く): 29201920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 419, 653, 838, 1306, 1676, 2095, 2612, 3265, 3352, 4190, 5224, 6530, 6704, 8380, 10448, 13060, 16760, 26120, 33520, 52240, 273607, 547214, 1094428, 1368035, 2188856, 2736070, 4377712, 5472140, 10944280, 21888560]

約数ペア:

[(1, 21888560), (2, 10944280), (4, 5472140), (5, 4377712), (8, 2736070), (10, 2188856), (16, 1368035), (20, 1094428), (40, 547214), (80, 273607), (419, 52240), (653, 33520), (838, 26120), (1306, 16760), (1676, 13060), (2095, 10448), (2612, 8380), (3265, 6704), (3352, 6530), (4190, 5224)]