21756560

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{38851}}^1$

素因数の和:38871

約数の個数: 40

約数和(自身を含む): 57811776

約数和(自身を除く): 36055216

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 38851, 77702, 155404, 194255, 271957, 310808, 388510, 543914, 621616, 777020, 1087828, 1359785, 1554040, 2175656, 2719570, 3108080, 4351312, 5439140, 10878280, 21756560]

約数ペア:

[(1, 21756560), (2, 10878280), (4, 5439140), (5, 4351312), (7, 3108080), (8, 2719570), (10, 2175656), (14, 1554040), (16, 1359785), (20, 1087828), (28, 777020), (35, 621616), (40, 543914), (56, 388510), (70, 310808), (80, 271957), (112, 194255), (140, 155404), (280, 77702), (560, 38851)]