209439240

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{1097}}^1$

素因数の和:1191

約数の個数: 128

約数和(自身を含む): 660908160

約数和(自身を除く): 451468920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 37, 40, 43, 60, 74, 86, 111, 120, 129, 148, 172, 185, 215, 222, 258, 296, 344, 370, 430, 444, 516, 555, 645, 740, 860, 888, 1032, 1097, 1110, 1290, 1480, 1591, 1720, 2194, 2220, 2580, 3182, 3291, 4388, 4440, 4773, 5160, 5485, 6364, 6582, 7955, 8776, 9546, 10970, 12728, 13164, 15910, 16455, 19092, 21940, 23865, 26328, 31820, 32910, 38184, 40589, 43880, 47171, 47730, 63640, 65820, 81178, 94342, 95460, 121767, 131640, 141513, 162356, 188684, 190920, 202945, 235855, 243534, 283026, 324712, 377368, 405890, 471710, 487068, 566052, 608835, 707565, 811780, 943420, 974136, 1132104, 1217670, 1415130, 1623560, 1745327, 1886840, 2435340, 2830260, 3490654, 4870680, 5235981, 5660520, 6981308, 8726635, 10471962, 13962616, 17453270, 20943924, 26179905, 34906540, 41887848, 52359810, 69813080, 104719620, 209439240]

約数ペア:

[(1, 209439240), (2, 104719620), (3, 69813080), (4, 52359810), (5, 41887848), (6, 34906540), (8, 26179905), (10, 20943924), (12, 17453270), (15, 13962616), (20, 10471962), (24, 8726635), (30, 6981308), (37, 5660520), (40, 5235981), (43, 4870680), (60, 3490654), (74, 2830260), (86, 2435340), (111, 1886840), (120, 1745327), (129, 1623560), (148, 1415130), (172, 1217670), (185, 1132104), (215, 974136), (222, 943420), (258, 811780), (296, 707565), (344, 608835), (370, 566052), (430, 487068), (444, 471710), (516, 405890), (555, 377368), (645, 324712), (740, 283026), (860, 243534), (888, 235855), (1032, 202945), (1097, 190920), (1110, 188684), (1290, 162356), (1480, 141513), (1591, 131640), (1720, 121767), (2194, 95460), (2220, 94342), (2580, 81178), (3182, 65820), (3291, 63640), (4388, 47730), (4440, 47171), (4773, 43880), (5160, 40589), (5485, 38184), (6364, 32910), (6582, 31820), (7955, 26328), (8776, 23865), (9546, 21940), (10970, 19092), (12728, 16455), (13164, 15910)]