21785040

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{383}}^1$

素因数の和:481

約数の個数: 120

約数和(自身を含む): 74280960

約数和(自身を除く): 52495920

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 79, 80, 90, 120, 144, 158, 180, 237, 240, 316, 360, 383, 395, 474, 632, 711, 720, 766, 790, 948, 1149, 1185, 1264, 1422, 1532, 1580, 1896, 1915, 2298, 2370, 2844, 3064, 3160, 3447, 3555, 3792, 3830, 4596, 4740, 5688, 5745, 6128, 6320, 6894, 7110, 7660, 9192, 9480, 11376, 11490, 13788, 14220, 15320, 17235, 18384, 18960, 22980, 27576, 28440, 30257, 30640, 34470, 45960, 55152, 56880, 60514, 68940, 90771, 91920, 121028, 137880, 151285, 181542, 242056, 272313, 275760, 302570, 363084, 453855, 484112, 544626, 605140, 726168, 907710, 1089252, 1210280, 1361565, 1452336, 1815420, 2178504, 2420560, 2723130, 3630840, 4357008, 5446260, 7261680, 10892520, 21785040]

約数ペア:

[(1, 21785040), (2, 10892520), (3, 7261680), (4, 5446260), (5, 4357008), (6, 3630840), (8, 2723130), (9, 2420560), (10, 2178504), (12, 1815420), (15, 1452336), (16, 1361565), (18, 1210280), (20, 1089252), (24, 907710), (30, 726168), (36, 605140), (40, 544626), (45, 484112), (48, 453855), (60, 363084), (72, 302570), (79, 275760), (80, 272313), (90, 242056), (120, 181542), (144, 151285), (158, 137880), (180, 121028), (237, 91920), (240, 90771), (316, 68940), (360, 60514), (383, 56880), (395, 55152), (474, 45960), (632, 34470), (711, 30640), (720, 30257), (766, 28440), (790, 27576), (948, 22980), (1149, 18960), (1185, 18384), (1264, 17235), (1422, 15320), (1532, 14220), (1580, 13788), (1896, 11490), (1915, 11376), (2298, 9480), (2370, 9192), (2844, 7660), (3064, 7110), (3160, 6894), (3447, 6320), (3555, 6128), (3792, 5745), (3830, 5688), (4596, 4740)]