21920300

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{139}}^1$

素因数の和:255

約数の個数: 72

約数和(自身を含む): 51038400

約数和(自身を除く): 29118100

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 83, 95, 100, 139, 166, 190, 278, 332, 380, 415, 475, 556, 695, 830, 950, 1390, 1577, 1660, 1900, 2075, 2641, 2780, 3154, 3475, 4150, 5282, 6308, 6950, 7885, 8300, 10564, 11537, 13205, 13900, 15770, 23074, 26410, 31540, 39425, 46148, 52820, 57685, 66025, 78850, 115370, 132050, 157700, 219203, 230740, 264100, 288425, 438406, 576850, 876812, 1096015, 1153700, 2192030, 4384060, 5480075, 10960150, 21920300]

約数ペア:

[(1, 21920300), (2, 10960150), (4, 5480075), (5, 4384060), (10, 2192030), (19, 1153700), (20, 1096015), (25, 876812), (38, 576850), (50, 438406), (76, 288425), (83, 264100), (95, 230740), (100, 219203), (139, 157700), (166, 132050), (190, 115370), (278, 78850), (332, 66025), (380, 57685), (415, 52820), (475, 46148), (556, 39425), (695, 31540), (830, 26410), (950, 23074), (1390, 15770), (1577, 13900), (1660, 13205), (1900, 11537), (2075, 10564), (2641, 8300), (2780, 7885), (3154, 6950), (3475, 6308), (4150, 5282)]