21492380

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{13}}^1\times {\mathrm{241}}^1$

素因数の和:284

約数の個数: 96

約数和(自身を含む): 56918400

約数和(自身を除く): 35426020

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 49, 52, 65, 70, 91, 98, 130, 140, 182, 196, 241, 245, 260, 343, 364, 455, 482, 490, 637, 686, 910, 964, 980, 1205, 1274, 1372, 1687, 1715, 1820, 2410, 2548, 3133, 3185, 3374, 3430, 4459, 4820, 6266, 6370, 6748, 6860, 8435, 8918, 11809, 12532, 12740, 15665, 16870, 17836, 21931, 22295, 23618, 31330, 33740, 43862, 44590, 47236, 59045, 62660, 82663, 87724, 89180, 109655, 118090, 153517, 165326, 219310, 236180, 307034, 330652, 413315, 438620, 614068, 767585, 826630, 1074619, 1535170, 1653260, 2149238, 3070340, 4298476, 5373095, 10746190, 21492380]

約数ペア:

[(1, 21492380), (2, 10746190), (4, 5373095), (5, 4298476), (7, 3070340), (10, 2149238), (13, 1653260), (14, 1535170), (20, 1074619), (26, 826630), (28, 767585), (35, 614068), (49, 438620), (52, 413315), (65, 330652), (70, 307034), (91, 236180), (98, 219310), (130, 165326), (140, 153517), (182, 118090), (196, 109655), (241, 89180), (245, 87724), (260, 82663), (343, 62660), (364, 59045), (455, 47236), (482, 44590), (490, 43862), (637, 33740), (686, 31330), (910, 23618), (964, 22295), (980, 21931), (1205, 17836), (1274, 16870), (1372, 15665), (1687, 12740), (1715, 12532), (1820, 11809), (2410, 8918), (2548, 8435), (3133, 6860), (3185, 6748), (3374, 6370), (3430, 6266), (4459, 4820)]