81923220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{463}}^1\times {\mathrm{983}}^1$

素因数の和:1461

約数の個数: 72

約数和(自身を含む): 249290496

約数和(自身を除く): 167367276

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 463, 926, 983, 1389, 1852, 1966, 2315, 2778, 2949, 3932, 4167, 4630, 4915, 5556, 5898, 6945, 8334, 8847, 9260, 9830, 11796, 13890, 14745, 16668, 17694, 19660, 20835, 27780, 29490, 35388, 41670, 44235, 58980, 83340, 88470, 176940, 455129, 910258, 1365387, 1820516, 2275645, 2730774, 4096161, 4551290, 5461548, 6826935, 8192322, 9102580, 13653870, 16384644, 20480805, 27307740, 40961610, 81923220]

約数ペア:

[(1, 81923220), (2, 40961610), (3, 27307740), (4, 20480805), (5, 16384644), (6, 13653870), (9, 9102580), (10, 8192322), (12, 6826935), (15, 5461548), (18, 4551290), (20, 4096161), (30, 2730774), (36, 2275645), (45, 1820516), (60, 1365387), (90, 910258), (180, 455129), (463, 176940), (926, 88470), (983, 83340), (1389, 58980), (1852, 44235), (1966, 41670), (2315, 35388), (2778, 29490), (2949, 27780), (3932, 20835), (4167, 19660), (4630, 17694), (4915, 16668), (5556, 14745), (5898, 13890), (6945, 11796), (8334, 9830), (8847, 9260)]