20551300

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{157}}^1$

素因数の和:206

約数の個数: 144

約数和(自身を含む): 59246208

約数和(自身を除く): 38694908

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 17, 20, 22, 25, 28, 34, 35, 44, 50, 55, 68, 70, 77, 85, 100, 110, 119, 140, 154, 157, 170, 175, 187, 220, 238, 275, 308, 314, 340, 350, 374, 385, 425, 476, 550, 595, 628, 700, 748, 770, 785, 850, 935, 1099, 1100, 1190, 1309, 1540, 1570, 1700, 1727, 1870, 1925, 2198, 2380, 2618, 2669, 2975, 3140, 3454, 3740, 3850, 3925, 4396, 4675, 5236, 5338, 5495, 5950, 6545, 6908, 7700, 7850, 8635, 9350, 10676, 10990, 11900, 12089, 13090, 13345, 15700, 17270, 18683, 18700, 21980, 24178, 26180, 26690, 27475, 29359, 32725, 34540, 37366, 43175, 48356, 53380, 54950, 58718, 60445, 65450, 66725, 74732, 86350, 93415, 109900, 117436, 120890, 130900, 133450, 146795, 172700, 186830, 205513, 241780, 266900, 293590, 302225, 373660, 411026, 467075, 587180, 604450, 733975, 822052, 934150, 1027565, 1208900, 1467950, 1868300, 2055130, 2935900, 4110260, 5137825, 10275650, 20551300]

約数ペア:

[(1, 20551300), (2, 10275650), (4, 5137825), (5, 4110260), (7, 2935900), (10, 2055130), (11, 1868300), (14, 1467950), (17, 1208900), (20, 1027565), (22, 934150), (25, 822052), (28, 733975), (34, 604450), (35, 587180), (44, 467075), (50, 411026), (55, 373660), (68, 302225), (70, 293590), (77, 266900), (85, 241780), (100, 205513), (110, 186830), (119, 172700), (140, 146795), (154, 133450), (157, 130900), (170, 120890), (175, 117436), (187, 109900), (220, 93415), (238, 86350), (275, 74732), (308, 66725), (314, 65450), (340, 60445), (350, 58718), (374, 54950), (385, 53380), (425, 48356), (476, 43175), (550, 37366), (595, 34540), (628, 32725), (700, 29359), (748, 27475), (770, 26690), (785, 26180), (850, 24178), (935, 21980), (1099, 18700), (1100, 18683), (1190, 17270), (1309, 15700), (1540, 13345), (1570, 13090), (1700, 12089), (1727, 11900), (1870, 10990), (1925, 10676), (2198, 9350), (2380, 8635), (2618, 7850), (2669, 7700), (2975, 6908), (3140, 6545), (3454, 5950), (3740, 5495), (3850, 5338), (3925, 5236), (4396, 4675)]