209969320

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{7823}}^1$

素因数の和:7906

約数の個数: 64

約数和(自身を含む): 523895040

約数和(自身を除く): 313925720

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 61, 88, 110, 122, 220, 244, 305, 440, 488, 610, 671, 1220, 1342, 2440, 2684, 3355, 5368, 6710, 7823, 13420, 15646, 26840, 31292, 39115, 62584, 78230, 86053, 156460, 172106, 312920, 344212, 430265, 477203, 688424, 860530, 954406, 1721060, 1908812, 2386015, 3442120, 3817624, 4772030, 5249233, 9544060, 10498466, 19088120, 20996932, 26246165, 41993864, 52492330, 104984660, 209969320]

約数ペア:

[(1, 209969320), (2, 104984660), (4, 52492330), (5, 41993864), (8, 26246165), (10, 20996932), (11, 19088120), (20, 10498466), (22, 9544060), (40, 5249233), (44, 4772030), (55, 3817624), (61, 3442120), (88, 2386015), (110, 1908812), (122, 1721060), (220, 954406), (244, 860530), (305, 688424), (440, 477203), (488, 430265), (610, 344212), (671, 312920), (1220, 172106), (1342, 156460), (2440, 86053), (2684, 78230), (3355, 62584), (5368, 39115), (6710, 31292), (7823, 26840), (13420, 15646)]