20423520

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1091}}^1$

素因数の和:1125

約数の個数: 144

約数和(自身を含む): 75125232

約数和(自身を除く): 54701712

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 30, 32, 36, 39, 40, 45, 48, 52, 60, 65, 72, 78, 80, 90, 96, 104, 117, 120, 130, 144, 156, 160, 180, 195, 208, 234, 240, 260, 288, 312, 360, 390, 416, 468, 480, 520, 585, 624, 720, 780, 936, 1040, 1091, 1170, 1248, 1440, 1560, 1872, 2080, 2182, 2340, 3120, 3273, 3744, 4364, 4680, 5455, 6240, 6546, 8728, 9360, 9819, 10910, 13092, 14183, 16365, 17456, 18720, 19638, 21820, 26184, 28366, 32730, 34912, 39276, 42549, 43640, 49095, 52368, 56732, 65460, 70915, 78552, 85098, 87280, 98190, 104736, 113464, 127647, 130920, 141830, 157104, 170196, 174560, 196380, 212745, 226928, 255294, 261840, 283660, 314208, 340392, 392760, 425490, 453856, 510588, 523680, 567320, 638235, 680784, 785520, 850980, 1021176, 1134640, 1276470, 1361568, 1571040, 1701960, 2042352, 2269280, 2552940, 3403920, 4084704, 5105880, 6807840, 10211760, 20423520]

約数ペア:

[(1, 20423520), (2, 10211760), (3, 6807840), (4, 5105880), (5, 4084704), (6, 3403920), (8, 2552940), (9, 2269280), (10, 2042352), (12, 1701960), (13, 1571040), (15, 1361568), (16, 1276470), (18, 1134640), (20, 1021176), (24, 850980), (26, 785520), (30, 680784), (32, 638235), (36, 567320), (39, 523680), (40, 510588), (45, 453856), (48, 425490), (52, 392760), (60, 340392), (65, 314208), (72, 283660), (78, 261840), (80, 255294), (90, 226928), (96, 212745), (104, 196380), (117, 174560), (120, 170196), (130, 157104), (144, 141830), (156, 130920), (160, 127647), (180, 113464), (195, 104736), (208, 98190), (234, 87280), (240, 85098), (260, 78552), (288, 70915), (312, 65460), (360, 56732), (390, 52368), (416, 49095), (468, 43640), (480, 42549), (520, 39276), (585, 34912), (624, 32730), (720, 28366), (780, 26184), (936, 21820), (1040, 19638), (1091, 18720), (1170, 17456), (1248, 16365), (1440, 14183), (1560, 13092), (1872, 10910), (2080, 9819), (2182, 9360), (2340, 8728), (3120, 6546), (3273, 6240), (3744, 5455), (4364, 4680)]