20937560

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1$

素因数の和:145

約数の個数: 128

約数和(自身を含む): 57784320

約数和(自身を除く): 36846760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 37, 40, 43, 47, 56, 70, 74, 86, 94, 140, 148, 172, 185, 188, 215, 235, 259, 280, 296, 301, 329, 344, 370, 376, 430, 470, 518, 602, 658, 740, 860, 940, 1036, 1204, 1295, 1316, 1480, 1505, 1591, 1645, 1720, 1739, 1880, 2021, 2072, 2408, 2590, 2632, 3010, 3182, 3290, 3478, 4042, 5180, 6020, 6364, 6580, 6956, 7955, 8084, 8695, 10105, 10360, 11137, 12040, 12173, 12728, 13160, 13912, 14147, 15910, 16168, 17390, 20210, 22274, 24346, 28294, 31820, 34780, 40420, 44548, 48692, 55685, 56588, 60865, 63640, 69560, 70735, 74777, 80840, 89096, 97384, 111370, 113176, 121730, 141470, 149554, 222740, 243460, 282940, 299108, 373885, 445480, 486920, 523439, 565880, 598216, 747770, 1046878, 1495540, 2093756, 2617195, 2991080, 4187512, 5234390, 10468780, 20937560]

約数ペア:

[(1, 20937560), (2, 10468780), (4, 5234390), (5, 4187512), (7, 2991080), (8, 2617195), (10, 2093756), (14, 1495540), (20, 1046878), (28, 747770), (35, 598216), (37, 565880), (40, 523439), (43, 486920), (47, 445480), (56, 373885), (70, 299108), (74, 282940), (86, 243460), (94, 222740), (140, 149554), (148, 141470), (172, 121730), (185, 113176), (188, 111370), (215, 97384), (235, 89096), (259, 80840), (280, 74777), (296, 70735), (301, 69560), (329, 63640), (344, 60865), (370, 56588), (376, 55685), (430, 48692), (470, 44548), (518, 40420), (602, 34780), (658, 31820), (740, 28294), (860, 24346), (940, 22274), (1036, 20210), (1204, 17390), (1295, 16168), (1316, 15910), (1480, 14147), (1505, 13912), (1591, 13160), (1645, 12728), (1720, 12173), (1739, 12040), (1880, 11137), (2021, 10360), (2072, 10105), (2408, 8695), (2590, 8084), (2632, 7955), (3010, 6956), (3182, 6580), (3290, 6364), (3478, 6020), (4042, 5180)]