20891700

素因数分解:

$2^2\times 3^2\times 5^2\times {\mathrm{139}}^1\times {\mathrm{167}}^1$

素因数の和:326

約数の個数: 108

約数和(自身を含む): 66349920

約数和(自身を除く): 45458220

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 30, 36, 45, 50, 60, 75, 90, 100, 139, 150, 167, 180, 225, 278, 300, 334, 417, 450, 501, 556, 668, 695, 834, 835, 900, 1002, 1251, 1390, 1503, 1668, 1670, 2004, 2085, 2502, 2505, 2780, 3006, 3340, 3475, 4170, 4175, 5004, 5010, 6012, 6255, 6950, 7515, 8340, 8350, 10020, 10425, 12510, 12525, 13900, 15030, 16700, 20850, 23213, 25020, 25050, 30060, 31275, 37575, 41700, 46426, 50100, 62550, 69639, 75150, 92852, 116065, 125100, 139278, 150300, 208917, 232130, 278556, 348195, 417834, 464260, 580325, 696390, 835668, 1044585, 1160650, 1392780, 1740975, 2089170, 2321300, 3481950, 4178340, 5222925, 6963900, 10445850, 20891700]

約数ペア:

[(1, 20891700), (2, 10445850), (3, 6963900), (4, 5222925), (5, 4178340), (6, 3481950), (9, 2321300), (10, 2089170), (12, 1740975), (15, 1392780), (18, 1160650), (20, 1044585), (25, 835668), (30, 696390), (36, 580325), (45, 464260), (50, 417834), (60, 348195), (75, 278556), (90, 232130), (100, 208917), (139, 150300), (150, 139278), (167, 125100), (180, 116065), (225, 92852), (278, 75150), (300, 69639), (334, 62550), (417, 50100), (450, 46426), (501, 41700), (556, 37575), (668, 31275), (695, 30060), (834, 25050), (835, 25020), (900, 23213), (1002, 20850), (1251, 16700), (1390, 15030), (1503, 13900), (1668, 12525), (1670, 12510), (2004, 10425), (2085, 10020), (2502, 8350), (2505, 8340), (2780, 7515), (3006, 6950), (3340, 6255), (3475, 6012), (4170, 5010), (4175, 5004)]