21437955

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{269}}^1$

素因数の和:321

約数の個数: 96

約数和(自身を含む): 48522240

約数和(自身を除く): 27084285

約数列:

[1, 3, 5, 7, 9, 11, 15, 21, 23, 33, 35, 45, 55, 63, 69, 77, 99, 105, 115, 161, 165, 207, 231, 253, 269, 315, 345, 385, 483, 495, 693, 759, 805, 807, 1035, 1155, 1265, 1345, 1449, 1771, 1883, 2277, 2415, 2421, 2959, 3465, 3795, 4035, 5313, 5649, 6187, 7245, 8855, 8877, 9415, 11385, 12105, 14795, 15939, 16947, 18561, 20713, 26565, 26631, 28245, 30935, 43309, 44385, 55683, 62139, 68057, 79695, 84735, 92805, 103565, 129927, 133155, 186417, 204171, 216545, 278415, 310695, 340285, 389781, 476399, 612513, 649635, 932085, 1020855, 1429197, 1948905, 2381995, 3062565, 4287591, 7145985, 21437955]

約数ペア:

[(1, 21437955), (3, 7145985), (5, 4287591), (7, 3062565), (9, 2381995), (11, 1948905), (15, 1429197), (21, 1020855), (23, 932085), (33, 649635), (35, 612513), (45, 476399), (55, 389781), (63, 340285), (69, 310695), (77, 278415), (99, 216545), (105, 204171), (115, 186417), (161, 133155), (165, 129927), (207, 103565), (231, 92805), (253, 84735), (269, 79695), (315, 68057), (345, 62139), (385, 55683), (483, 44385), (495, 43309), (693, 30935), (759, 28245), (805, 26631), (807, 26565), (1035, 20713), (1155, 18561), (1265, 16947), (1345, 15939), (1449, 14795), (1771, 12105), (1883, 11385), (2277, 9415), (2415, 8877), (2421, 8855), (2959, 7245), (3465, 6187), (3795, 5649), (4035, 5313)]