21222880

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{2707}}^1$

素因数の和:2736

約数の個数: 72

約数和(自身を含む): 58346568

約数和(自身を除く): 37123688

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 70, 80, 98, 112, 140, 160, 196, 224, 245, 280, 392, 490, 560, 784, 980, 1120, 1568, 1960, 2707, 3920, 5414, 7840, 10828, 13535, 18949, 21656, 27070, 37898, 43312, 54140, 75796, 86624, 94745, 108280, 132643, 151592, 189490, 216560, 265286, 303184, 378980, 433120, 530572, 606368, 663215, 757960, 1061144, 1326430, 1515920, 2122288, 2652860, 3031840, 4244576, 5305720, 10611440, 21222880]

約数ペア:

[(1, 21222880), (2, 10611440), (4, 5305720), (5, 4244576), (7, 3031840), (8, 2652860), (10, 2122288), (14, 1515920), (16, 1326430), (20, 1061144), (28, 757960), (32, 663215), (35, 606368), (40, 530572), (49, 433120), (56, 378980), (70, 303184), (80, 265286), (98, 216560), (112, 189490), (140, 151592), (160, 132643), (196, 108280), (224, 94745), (245, 86624), (280, 75796), (392, 54140), (490, 43312), (560, 37898), (784, 27070), (980, 21656), (1120, 18949), (1568, 13535), (1960, 10828), (2707, 7840), (3920, 5414)]