19513868

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{373}}^1$

素因数の和:458

約数の個数: 48

約数和(自身を含む): 39584160

約数和(自身を除く): 20070292

約数列:

[1, 2, 4, 11, 22, 29, 41, 44, 58, 82, 116, 164, 319, 373, 451, 638, 746, 902, 1189, 1276, 1492, 1804, 2378, 4103, 4756, 8206, 10817, 13079, 15293, 16412, 21634, 26158, 30586, 43268, 52316, 61172, 118987, 168223, 237974, 336446, 443497, 475948, 672892, 886994, 1773988, 4878467, 9756934, 19513868]

約数ペア:

[(1, 19513868), (2, 9756934), (4, 4878467), (11, 1773988), (22, 886994), (29, 672892), (41, 475948), (44, 443497), (58, 336446), (82, 237974), (116, 168223), (164, 118987), (319, 61172), (373, 52316), (451, 43268), (638, 30586), (746, 26158), (902, 21634), (1189, 16412), (1276, 15293), (1492, 13079), (1804, 10817), (2378, 8206), (4103, 4756)]