81780405

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{9859}}^1$

素因数の和:9953

約数の個数: 32

約数和(自身を含む): 151449600

約数和(自身を除く): 69669195

約数列:

[1, 3, 5, 7, 15, 21, 35, 79, 105, 237, 395, 553, 1185, 1659, 2765, 8295, 9859, 29577, 49295, 69013, 147885, 207039, 345065, 778861, 1035195, 2336583, 3894305, 5452027, 11682915, 16356081, 27260135, 81780405]

約数ペア:

[(1, 81780405), (3, 27260135), (5, 16356081), (7, 11682915), (15, 5452027), (21, 3894305), (35, 2336583), (79, 1035195), (105, 778861), (237, 345065), (395, 207039), (553, 147885), (1185, 69013), (1659, 49295), (2765, 29577), (8295, 9859)]