20865516

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{2791}}^1$

素因数の和:2894

約数の個数: 48

約数和(自身を含む): 56286720

約数和(自身を除く): 35421204

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 89, 178, 267, 356, 534, 623, 1068, 1246, 1869, 2492, 2791, 3738, 5582, 7476, 8373, 11164, 16746, 19537, 33492, 39074, 58611, 78148, 117222, 234444, 248399, 496798, 745197, 993596, 1490394, 1738793, 2980788, 3477586, 5216379, 6955172, 10432758, 20865516]

約数ペア:

[(1, 20865516), (2, 10432758), (3, 6955172), (4, 5216379), (6, 3477586), (7, 2980788), (12, 1738793), (14, 1490394), (21, 993596), (28, 745197), (42, 496798), (84, 248399), (89, 234444), (178, 117222), (267, 78148), (356, 58611), (534, 39074), (623, 33492), (1068, 19537), (1246, 16746), (1869, 11164), (2492, 8373), (2791, 7476), (3738, 5582)]