20189655

素因数分解:

$3^6\times 5^1\times {\mathrm{29}}^1\times {\mathrm{191}}^1$

素因数の和:243

約数の個数: 56

約数和(自身を含む): 37774080

約数和(自身を除く): 17584425

約数列:

[1, 3, 5, 9, 15, 27, 29, 45, 81, 87, 135, 145, 191, 243, 261, 405, 435, 573, 729, 783, 955, 1215, 1305, 1719, 2349, 2865, 3645, 3915, 5157, 5539, 7047, 8595, 11745, 15471, 16617, 21141, 25785, 27695, 35235, 46413, 49851, 77355, 83085, 105705, 139239, 149553, 232065, 249255, 448659, 696195, 747765, 1345977, 2243295, 4037931, 6729885, 20189655]

約数ペア:

[(1, 20189655), (3, 6729885), (5, 4037931), (9, 2243295), (15, 1345977), (27, 747765), (29, 696195), (45, 448659), (81, 249255), (87, 232065), (135, 149553), (145, 139239), (191, 105705), (243, 83085), (261, 77355), (405, 49851), (435, 46413), (573, 35235), (729, 27695), (783, 25785), (955, 21141), (1215, 16617), (1305, 15471), (1719, 11745), (2349, 8595), (2865, 7047), (3645, 5539), (3915, 5157)]