21150640

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{179}}^1\times {\mathrm{211}}^1$

素因数の和:410

約数の個数: 80

約数和(自身を含む): 56782080

約数和(自身を除く): 35631440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 179, 211, 280, 358, 422, 560, 716, 844, 895, 1055, 1253, 1432, 1477, 1688, 1790, 2110, 2506, 2864, 2954, 3376, 3580, 4220, 5012, 5908, 6265, 7160, 7385, 8440, 10024, 11816, 12530, 14320, 14770, 16880, 20048, 23632, 25060, 29540, 37769, 50120, 59080, 75538, 100240, 118160, 151076, 188845, 264383, 302152, 377690, 528766, 604304, 755380, 1057532, 1321915, 1510760, 2115064, 2643830, 3021520, 4230128, 5287660, 10575320, 21150640]

約数ペア:

[(1, 21150640), (2, 10575320), (4, 5287660), (5, 4230128), (7, 3021520), (8, 2643830), (10, 2115064), (14, 1510760), (16, 1321915), (20, 1057532), (28, 755380), (35, 604304), (40, 528766), (56, 377690), (70, 302152), (80, 264383), (112, 188845), (140, 151076), (179, 118160), (211, 100240), (280, 75538), (358, 59080), (422, 50120), (560, 37769), (716, 29540), (844, 25060), (895, 23632), (1055, 20048), (1253, 16880), (1432, 14770), (1477, 14320), (1688, 12530), (1790, 11816), (2110, 10024), (2506, 8440), (2864, 7385), (2954, 7160), (3376, 6265), (3580, 5908), (4220, 5012)]