20428440

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{107}}^1$

素因数の和:201

約数の個数: 128

約数和(自身を含む): 65007360

約数和(自身を除く): 44578920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 37, 40, 43, 60, 74, 86, 107, 111, 120, 129, 148, 172, 185, 214, 215, 222, 258, 296, 321, 344, 370, 428, 430, 444, 516, 535, 555, 642, 645, 740, 856, 860, 888, 1032, 1070, 1110, 1284, 1290, 1480, 1591, 1605, 1720, 2140, 2220, 2568, 2580, 3182, 3210, 3959, 4280, 4440, 4601, 4773, 5160, 6364, 6420, 7918, 7955, 9202, 9546, 11877, 12728, 12840, 13803, 15836, 15910, 18404, 19092, 19795, 23005, 23754, 23865, 27606, 31672, 31820, 36808, 38184, 39590, 46010, 47508, 47730, 55212, 59385, 63640, 69015, 79180, 92020, 95016, 95460, 110424, 118770, 138030, 158360, 170237, 184040, 190920, 237540, 276060, 340474, 475080, 510711, 552120, 680948, 851185, 1021422, 1361896, 1702370, 2042844, 2553555, 3404740, 4085688, 5107110, 6809480, 10214220, 20428440]

約数ペア:

[(1, 20428440), (2, 10214220), (3, 6809480), (4, 5107110), (5, 4085688), (6, 3404740), (8, 2553555), (10, 2042844), (12, 1702370), (15, 1361896), (20, 1021422), (24, 851185), (30, 680948), (37, 552120), (40, 510711), (43, 475080), (60, 340474), (74, 276060), (86, 237540), (107, 190920), (111, 184040), (120, 170237), (129, 158360), (148, 138030), (172, 118770), (185, 110424), (214, 95460), (215, 95016), (222, 92020), (258, 79180), (296, 69015), (321, 63640), (344, 59385), (370, 55212), (428, 47730), (430, 47508), (444, 46010), (516, 39590), (535, 38184), (555, 36808), (642, 31820), (645, 31672), (740, 27606), (856, 23865), (860, 23754), (888, 23005), (1032, 19795), (1070, 19092), (1110, 18404), (1284, 15910), (1290, 15836), (1480, 13803), (1591, 12840), (1605, 12728), (1720, 11877), (2140, 9546), (2220, 9202), (2568, 7955), (2580, 7918), (3182, 6420), (3210, 6364), (3959, 5160), (4280, 4773), (4440, 4601)]