20706400

素因数分解:

$2^5\times 5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{181}}^1$

素因数の和:225

約数の個数: 144

約数和(自身を含む): 59714928

約数和(自身を除く): 39008528

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 20, 22, 25, 26, 32, 40, 44, 50, 52, 55, 65, 80, 88, 100, 104, 110, 130, 143, 160, 176, 181, 200, 208, 220, 260, 275, 286, 325, 352, 362, 400, 416, 440, 520, 550, 572, 650, 715, 724, 800, 880, 905, 1040, 1100, 1144, 1300, 1430, 1448, 1760, 1810, 1991, 2080, 2200, 2288, 2353, 2600, 2860, 2896, 3575, 3620, 3982, 4400, 4525, 4576, 4706, 5200, 5720, 5792, 7150, 7240, 7964, 8800, 9050, 9412, 9955, 10400, 11440, 11765, 14300, 14480, 15928, 18100, 18824, 19910, 22880, 23530, 25883, 28600, 28960, 31856, 36200, 37648, 39820, 47060, 49775, 51766, 57200, 58825, 63712, 72400, 75296, 79640, 94120, 99550, 103532, 114400, 117650, 129415, 144800, 159280, 188240, 199100, 207064, 235300, 258830, 318560, 376480, 398200, 414128, 470600, 517660, 647075, 796400, 828256, 941200, 1035320, 1294150, 1592800, 1882400, 2070640, 2588300, 4141280, 5176600, 10353200, 20706400]

約数ペア:

[(1, 20706400), (2, 10353200), (4, 5176600), (5, 4141280), (8, 2588300), (10, 2070640), (11, 1882400), (13, 1592800), (16, 1294150), (20, 1035320), (22, 941200), (25, 828256), (26, 796400), (32, 647075), (40, 517660), (44, 470600), (50, 414128), (52, 398200), (55, 376480), (65, 318560), (80, 258830), (88, 235300), (100, 207064), (104, 199100), (110, 188240), (130, 159280), (143, 144800), (160, 129415), (176, 117650), (181, 114400), (200, 103532), (208, 99550), (220, 94120), (260, 79640), (275, 75296), (286, 72400), (325, 63712), (352, 58825), (362, 57200), (400, 51766), (416, 49775), (440, 47060), (520, 39820), (550, 37648), (572, 36200), (650, 31856), (715, 28960), (724, 28600), (800, 25883), (880, 23530), (905, 22880), (1040, 19910), (1100, 18824), (1144, 18100), (1300, 15928), (1430, 14480), (1448, 14300), (1760, 11765), (1810, 11440), (1991, 10400), (2080, 9955), (2200, 9412), (2288, 9050), (2353, 8800), (2600, 7964), (2860, 7240), (2896, 7150), (3575, 5792), (3620, 5720), (3982, 5200), (4400, 4706), (4525, 4576)]