21430640

素因数分解:

$2^4\times 5^1\times 7^3\times {\mathrm{11}}^1\times {\mathrm{71}}^1$

素因数の和:116

約数の個数: 160

約数和(自身を含む): 64281600

約数和(自身を除く): 42850960

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 35, 40, 44, 49, 55, 56, 70, 71, 77, 80, 88, 98, 110, 112, 140, 142, 154, 176, 196, 220, 245, 280, 284, 308, 343, 355, 385, 392, 440, 490, 497, 539, 560, 568, 616, 686, 710, 770, 781, 784, 880, 980, 994, 1078, 1136, 1232, 1372, 1420, 1540, 1562, 1715, 1960, 1988, 2156, 2485, 2695, 2744, 2840, 3080, 3124, 3430, 3479, 3773, 3905, 3920, 3976, 4312, 4970, 5390, 5467, 5488, 5680, 6160, 6248, 6860, 6958, 7546, 7810, 7952, 8624, 9940, 10780, 10934, 12496, 13720, 13916, 15092, 15620, 17395, 18865, 19880, 21560, 21868, 24353, 27335, 27440, 27832, 30184, 31240, 34790, 37730, 38269, 39760, 43120, 43736, 48706, 54670, 55664, 60368, 62480, 69580, 75460, 76538, 87472, 97412, 109340, 121765, 139160, 150920, 153076, 191345, 194824, 218680, 243530, 267883, 278320, 301840, 306152, 382690, 389648, 437360, 487060, 535766, 612304, 765380, 974120, 1071532, 1339415, 1530760, 1948240, 2143064, 2678830, 3061520, 4286128, 5357660, 10715320, 21430640]

約数ペア:

[(1, 21430640), (2, 10715320), (4, 5357660), (5, 4286128), (7, 3061520), (8, 2678830), (10, 2143064), (11, 1948240), (14, 1530760), (16, 1339415), (20, 1071532), (22, 974120), (28, 765380), (35, 612304), (40, 535766), (44, 487060), (49, 437360), (55, 389648), (56, 382690), (70, 306152), (71, 301840), (77, 278320), (80, 267883), (88, 243530), (98, 218680), (110, 194824), (112, 191345), (140, 153076), (142, 150920), (154, 139160), (176, 121765), (196, 109340), (220, 97412), (245, 87472), (280, 76538), (284, 75460), (308, 69580), (343, 62480), (355, 60368), (385, 55664), (392, 54670), (440, 48706), (490, 43736), (497, 43120), (539, 39760), (560, 38269), (568, 37730), (616, 34790), (686, 31240), (710, 30184), (770, 27832), (781, 27440), (784, 27335), (880, 24353), (980, 21868), (994, 21560), (1078, 19880), (1136, 18865), (1232, 17395), (1372, 15620), (1420, 15092), (1540, 13916), (1562, 13720), (1715, 12496), (1960, 10934), (1988, 10780), (2156, 9940), (2485, 8624), (2695, 7952), (2744, 7810), (2840, 7546), (3080, 6958), (3124, 6860), (3430, 6248), (3479, 6160), (3773, 5680), (3905, 5488), (3920, 5467), (3976, 5390), (4312, 4970)]