19271780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{251}}^1\times {\mathrm{349}}^1$

素因数の和:620

約数の個数: 48

約数和(自身を含む): 44452800

約数和(自身を除く): 25181020

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 251, 349, 502, 698, 1004, 1255, 1396, 1745, 2510, 2761, 3490, 3839, 5020, 5522, 6980, 7678, 11044, 13805, 15356, 19195, 27610, 38390, 55220, 76780, 87599, 175198, 350396, 437995, 875990, 963589, 1751980, 1927178, 3854356, 4817945, 9635890, 19271780]

約数ペア:

[(1, 19271780), (2, 9635890), (4, 4817945), (5, 3854356), (10, 1927178), (11, 1751980), (20, 963589), (22, 875990), (44, 437995), (55, 350396), (110, 175198), (220, 87599), (251, 76780), (349, 55220), (502, 38390), (698, 27610), (1004, 19195), (1255, 15356), (1396, 13805), (1745, 11044), (2510, 7678), (2761, 6980), (3490, 5522), (3839, 5020)]