21853980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{317}}^1\times {\mathrm{383}}^1$

素因数の和:715

約数の個数: 72

約数和(自身を含む): 66673152

約数和(自身を除く): 44819172

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 317, 383, 634, 766, 951, 1149, 1268, 1532, 1585, 1902, 1915, 2298, 2853, 3170, 3447, 3804, 3830, 4596, 4755, 5706, 5745, 6340, 6894, 7660, 9510, 11412, 11490, 13788, 14265, 17235, 19020, 22980, 28530, 34470, 57060, 68940, 121411, 242822, 364233, 485644, 607055, 728466, 1092699, 1214110, 1456932, 1821165, 2185398, 2428220, 3642330, 4370796, 5463495, 7284660, 10926990, 21853980]

約数ペア:

[(1, 21853980), (2, 10926990), (3, 7284660), (4, 5463495), (5, 4370796), (6, 3642330), (9, 2428220), (10, 2185398), (12, 1821165), (15, 1456932), (18, 1214110), (20, 1092699), (30, 728466), (36, 607055), (45, 485644), (60, 364233), (90, 242822), (180, 121411), (317, 68940), (383, 57060), (634, 34470), (766, 28530), (951, 22980), (1149, 19020), (1268, 17235), (1532, 14265), (1585, 13788), (1902, 11490), (1915, 11412), (2298, 9510), (2853, 7660), (3170, 6894), (3447, 6340), (3804, 5745), (3830, 5706), (4596, 4755)]