18281900

素因数分解:

$2^2\times 5^2\times 7^3\times {\mathrm{13}}^1\times {\mathrm{41}}^1$

素因数の和:89

約数の個数: 144

約数和(自身を含む): 51038400

約数和(自身を除く): 32756500

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 25, 26, 28, 35, 41, 49, 50, 52, 65, 70, 82, 91, 98, 100, 130, 140, 164, 175, 182, 196, 205, 245, 260, 287, 325, 343, 350, 364, 410, 455, 490, 533, 574, 637, 650, 686, 700, 820, 910, 980, 1025, 1066, 1148, 1225, 1274, 1300, 1372, 1435, 1715, 1820, 2009, 2050, 2132, 2275, 2450, 2548, 2665, 2870, 3185, 3430, 3731, 4018, 4100, 4459, 4550, 4900, 5330, 5740, 6370, 6860, 7175, 7462, 8036, 8575, 8918, 9100, 10045, 10660, 12740, 13325, 14063, 14350, 14924, 15925, 17150, 17836, 18655, 20090, 22295, 26117, 26650, 28126, 28700, 31850, 34300, 37310, 40180, 44590, 50225, 52234, 53300, 56252, 63700, 70315, 74620, 89180, 93275, 100450, 104468, 111475, 130585, 140630, 182819, 186550, 200900, 222950, 261170, 281260, 351575, 365638, 373100, 445900, 522340, 652925, 703150, 731276, 914095, 1305850, 1406300, 1828190, 2611700, 3656380, 4570475, 9140950, 18281900]

約数ペア:

[(1, 18281900), (2, 9140950), (4, 4570475), (5, 3656380), (7, 2611700), (10, 1828190), (13, 1406300), (14, 1305850), (20, 914095), (25, 731276), (26, 703150), (28, 652925), (35, 522340), (41, 445900), (49, 373100), (50, 365638), (52, 351575), (65, 281260), (70, 261170), (82, 222950), (91, 200900), (98, 186550), (100, 182819), (130, 140630), (140, 130585), (164, 111475), (175, 104468), (182, 100450), (196, 93275), (205, 89180), (245, 74620), (260, 70315), (287, 63700), (325, 56252), (343, 53300), (350, 52234), (364, 50225), (410, 44590), (455, 40180), (490, 37310), (533, 34300), (574, 31850), (637, 28700), (650, 28126), (686, 26650), (700, 26117), (820, 22295), (910, 20090), (980, 18655), (1025, 17836), (1066, 17150), (1148, 15925), (1225, 14924), (1274, 14350), (1300, 14063), (1372, 13325), (1435, 12740), (1715, 10660), (1820, 10045), (2009, 9100), (2050, 8918), (2132, 8575), (2275, 8036), (2450, 7462), (2548, 7175), (2665, 6860), (2870, 6370), (3185, 5740), (3430, 5330), (3731, 4900), (4018, 4550), (4100, 4459)]