21804804

素因数分解:

$2^2\times 3^2\times 7^2\times {\mathrm{47}}^1\times {\mathrm{263}}^1$

素因数の和:334

約数の個数: 108

約数和(自身を含む): 65729664

約数和(自身を除く): 43924860

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 47, 49, 63, 84, 94, 98, 126, 141, 147, 188, 196, 252, 263, 282, 294, 329, 423, 441, 526, 564, 588, 658, 789, 846, 882, 987, 1052, 1316, 1578, 1692, 1764, 1841, 1974, 2303, 2367, 2961, 3156, 3682, 3948, 4606, 4734, 5523, 5922, 6909, 7364, 9212, 9468, 11046, 11844, 12361, 12887, 13818, 16569, 20727, 22092, 24722, 25774, 27636, 33138, 37083, 38661, 41454, 49444, 51548, 66276, 74166, 77322, 82908, 86527, 111249, 115983, 148332, 154644, 173054, 222498, 231966, 259581, 346108, 444996, 463932, 519162, 605689, 778743, 1038324, 1211378, 1557486, 1817067, 2422756, 3114972, 3634134, 5451201, 7268268, 10902402, 21804804]

約数ペア:

[(1, 21804804), (2, 10902402), (3, 7268268), (4, 5451201), (6, 3634134), (7, 3114972), (9, 2422756), (12, 1817067), (14, 1557486), (18, 1211378), (21, 1038324), (28, 778743), (36, 605689), (42, 519162), (47, 463932), (49, 444996), (63, 346108), (84, 259581), (94, 231966), (98, 222498), (126, 173054), (141, 154644), (147, 148332), (188, 115983), (196, 111249), (252, 86527), (263, 82908), (282, 77322), (294, 74166), (329, 66276), (423, 51548), (441, 49444), (526, 41454), (564, 38661), (588, 37083), (658, 33138), (789, 27636), (846, 25774), (882, 24722), (987, 22092), (1052, 20727), (1316, 16569), (1578, 13818), (1692, 12887), (1764, 12361), (1841, 11844), (1974, 11046), (2303, 9468), (2367, 9212), (2961, 7364), (3156, 6909), (3682, 5922), (3948, 5523), (4606, 4734)]