20779485440

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{709}}^1\times {\mathrm{3271}}^1$

素因数の和:4008

約数の個数: 144

約数和(自身を含む): 56981487360

約数和(自身を除く): 36202001920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 160, 224, 256, 280, 320, 448, 560, 640, 709, 896, 1120, 1280, 1418, 1792, 2240, 2836, 3271, 3545, 4480, 4963, 5672, 6542, 7090, 8960, 9926, 11344, 13084, 14180, 16355, 19852, 22688, 22897, 24815, 26168, 28360, 32710, 39704, 45376, 45794, 49630, 52336, 56720, 65420, 79408, 90752, 91588, 99260, 104672, 113440, 114485, 130840, 158816, 181504, 183176, 198520, 209344, 226880, 228970, 261680, 317632, 366352, 397040, 418688, 453760, 457940, 523360, 635264, 732704, 794080, 837376, 907520, 915880, 1046720, 1270528, 1465408, 1588160, 1831760, 2093440, 2319139, 2930816, 3176320, 3663520, 4186880, 4638278, 5861632, 6352640, 7327040, 9276556, 11595695, 14654080, 16233973, 18553112, 23191390, 29308160, 32467946, 37106224, 46382780, 64935892, 74212448, 81169865, 92765560, 129871784, 148424896, 162339730, 185531120, 259743568, 296849792, 324679460, 371062240, 519487136, 593699584, 649358920, 742124480, 1038974272, 1298717840, 1484248960, 2077948544, 2597435680, 2968497920, 4155897088, 5194871360, 10389742720, 20779485440]

約数ペア:

[(1, 20779485440), (2, 10389742720), (4, 5194871360), (5, 4155897088), (7, 2968497920), (8, 2597435680), (10, 2077948544), (14, 1484248960), (16, 1298717840), (20, 1038974272), (28, 742124480), (32, 649358920), (35, 593699584), (40, 519487136), (56, 371062240), (64, 324679460), (70, 296849792), (80, 259743568), (112, 185531120), (128, 162339730), (140, 148424896), (160, 129871784), (224, 92765560), (256, 81169865), (280, 74212448), (320, 64935892), (448, 46382780), (560, 37106224), (640, 32467946), (709, 29308160), (896, 23191390), (1120, 18553112), (1280, 16233973), (1418, 14654080), (1792, 11595695), (2240, 9276556), (2836, 7327040), (3271, 6352640), (3545, 5861632), (4480, 4638278), (4963, 4186880), (5672, 3663520), (6542, 3176320), (7090, 2930816), (8960, 2319139), (9926, 2093440), (11344, 1831760), (13084, 1588160), (14180, 1465408), (16355, 1270528), (19852, 1046720), (22688, 915880), (22897, 907520), (24815, 837376), (26168, 794080), (28360, 732704), (32710, 635264), (39704, 523360), (45376, 457940), (45794, 453760), (49630, 418688), (52336, 397040), (56720, 366352), (65420, 317632), (79408, 261680), (90752, 228970), (91588, 226880), (99260, 209344), (104672, 198520), (113440, 183176), (114485, 181504), (130840, 158816)]