21855560

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{83}}^1\times {\mathrm{227}}^1$

素因数の和:350

約数の個数: 64

約数和(自身を含む): 51710400

約数和(自身を除く): 29854840

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 83, 116, 145, 166, 227, 232, 290, 332, 415, 454, 580, 664, 830, 908, 1135, 1160, 1660, 1816, 2270, 2407, 3320, 4540, 4814, 6583, 9080, 9628, 12035, 13166, 18841, 19256, 24070, 26332, 32915, 37682, 48140, 52664, 65830, 75364, 94205, 96280, 131660, 150728, 188410, 263320, 376820, 546389, 753640, 1092778, 2185556, 2731945, 4371112, 5463890, 10927780, 21855560]

約数ペア:

[(1, 21855560), (2, 10927780), (4, 5463890), (5, 4371112), (8, 2731945), (10, 2185556), (20, 1092778), (29, 753640), (40, 546389), (58, 376820), (83, 263320), (116, 188410), (145, 150728), (166, 131660), (227, 96280), (232, 94205), (290, 75364), (332, 65830), (415, 52664), (454, 48140), (580, 37682), (664, 32915), (830, 26332), (908, 24070), (1135, 19256), (1160, 18841), (1660, 13166), (1816, 12035), (2270, 9628), (2407, 9080), (3320, 6583), (4540, 4814)]