20545371

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{1289}}^1$

素因数の和:1336

約数の個数: 48

約数和(自身を含む): 38638080

約数和(自身を除く): 18092709

約数列:

[1, 3, 7, 9, 11, 21, 23, 33, 63, 69, 77, 99, 161, 207, 231, 253, 483, 693, 759, 1289, 1449, 1771, 2277, 3867, 5313, 9023, 11601, 14179, 15939, 27069, 29647, 42537, 81207, 88941, 99253, 127611, 207529, 266823, 297759, 326117, 622587, 893277, 978351, 1867761, 2282819, 2935053, 6848457, 20545371]

約数ペア:

[(1, 20545371), (3, 6848457), (7, 2935053), (9, 2282819), (11, 1867761), (21, 978351), (23, 893277), (33, 622587), (63, 326117), (69, 297759), (77, 266823), (99, 207529), (161, 127611), (207, 99253), (231, 88941), (253, 81207), (483, 42537), (693, 29647), (759, 27069), (1289, 15939), (1449, 14179), (1771, 11601), (2277, 9023), (3867, 5313)]