21311928

素因数分解:

$2^3\times 3^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{379}}^1$

素因数の和:473

約数の個数: 96

約数和(自身を含む): 64022400

約数和(自身を除く): 42710472

約数列:

[1, 2, 3, 4, 6, 8, 9, 11, 12, 18, 22, 24, 33, 36, 44, 66, 71, 72, 88, 99, 132, 142, 198, 213, 264, 284, 379, 396, 426, 568, 639, 758, 781, 792, 852, 1137, 1278, 1516, 1562, 1704, 2274, 2343, 2556, 3032, 3124, 3411, 4169, 4548, 4686, 5112, 6248, 6822, 7029, 8338, 9096, 9372, 12507, 13644, 14058, 16676, 18744, 25014, 26909, 27288, 28116, 33352, 37521, 50028, 53818, 56232, 75042, 80727, 100056, 107636, 150084, 161454, 215272, 242181, 295999, 300168, 322908, 484362, 591998, 645816, 887997, 968724, 1183996, 1775994, 1937448, 2367992, 2663991, 3551988, 5327982, 7103976, 10655964, 21311928]

約数ペア:

[(1, 21311928), (2, 10655964), (3, 7103976), (4, 5327982), (6, 3551988), (8, 2663991), (9, 2367992), (11, 1937448), (12, 1775994), (18, 1183996), (22, 968724), (24, 887997), (33, 645816), (36, 591998), (44, 484362), (66, 322908), (71, 300168), (72, 295999), (88, 242181), (99, 215272), (132, 161454), (142, 150084), (198, 107636), (213, 100056), (264, 80727), (284, 75042), (379, 56232), (396, 53818), (426, 50028), (568, 37521), (639, 33352), (758, 28116), (781, 27288), (792, 26909), (852, 25014), (1137, 18744), (1278, 16676), (1516, 14058), (1562, 13644), (1704, 12507), (2274, 9372), (2343, 9096), (2556, 8338), (3032, 7029), (3124, 6822), (3411, 6248), (4169, 5112), (4548, 4686)]