20339120

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{13381}}^1$

素因数の和:13413

約数の個数: 40

約数和(自身を含む): 49781040

約数和(自身を除く): 29441920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 13381, 26762, 53524, 66905, 107048, 133810, 214096, 254239, 267620, 508478, 535240, 1016956, 1070480, 1271195, 2033912, 2542390, 4067824, 5084780, 10169560, 20339120]

約数ペア:

[(1, 20339120), (2, 10169560), (4, 5084780), (5, 4067824), (8, 2542390), (10, 2033912), (16, 1271195), (19, 1070480), (20, 1016956), (38, 535240), (40, 508478), (76, 267620), (80, 254239), (95, 214096), (152, 133810), (190, 107048), (304, 66905), (380, 53524), (760, 26762), (1520, 13381)]