19651821

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^2\times {\mathrm{29}}^1\times {\mathrm{61}}^1$

素因数の和:146

約数の個数: 48

約数和(自身を含む): 32914560

約数和(自身を除く): 13262739

約数列:

[1, 3, 7, 21, 23, 29, 61, 69, 87, 161, 183, 203, 427, 483, 529, 609, 667, 1281, 1403, 1587, 1769, 2001, 3703, 4209, 4669, 5307, 9821, 11109, 12383, 14007, 15341, 29463, 32269, 37149, 40687, 46023, 96807, 107387, 122061, 225883, 284809, 322161, 677649, 854427, 935801, 2807403, 6550607, 19651821]

約数ペア:

[(1, 19651821), (3, 6550607), (7, 2807403), (21, 935801), (23, 854427), (29, 677649), (61, 322161), (69, 284809), (87, 225883), (161, 122061), (183, 107387), (203, 96807), (427, 46023), (483, 40687), (529, 37149), (609, 32269), (667, 29463), (1281, 15341), (1403, 14007), (1587, 12383), (1769, 11109), (2001, 9821), (3703, 5307), (4209, 4669)]