20404728

素因数分解:

$2^3\times 3^2\times {\mathrm{167}}^1\times {\mathrm{1697}}^1$

素因数の和:1876

約数の個数: 48

約数和(自身を含む): 55626480

約数和(自身を除く): 35221752

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 167, 334, 501, 668, 1002, 1336, 1503, 1697, 2004, 3006, 3394, 4008, 5091, 6012, 6788, 10182, 12024, 13576, 15273, 20364, 30546, 40728, 61092, 122184, 283399, 566798, 850197, 1133596, 1700394, 2267192, 2550591, 3400788, 5101182, 6801576, 10202364, 20404728]

約数ペア:

[(1, 20404728), (2, 10202364), (3, 6801576), (4, 5101182), (6, 3400788), (8, 2550591), (9, 2267192), (12, 1700394), (18, 1133596), (24, 850197), (36, 566798), (72, 283399), (167, 122184), (334, 61092), (501, 40728), (668, 30546), (1002, 20364), (1336, 15273), (1503, 13576), (1697, 12024), (2004, 10182), (3006, 6788), (3394, 6012), (4008, 5091)]