21493440

素因数分解:

$2^6\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{439}}^1$

素因数の和:479

約数の個数: 168

約数和(自身を含む): 78455520

約数和(自身を除く): 56962080

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 17, 18, 20, 24, 30, 32, 34, 36, 40, 45, 48, 51, 60, 64, 68, 72, 80, 85, 90, 96, 102, 120, 136, 144, 153, 160, 170, 180, 192, 204, 240, 255, 272, 288, 306, 320, 340, 360, 408, 439, 480, 510, 544, 576, 612, 680, 720, 765, 816, 878, 960, 1020, 1088, 1224, 1317, 1360, 1440, 1530, 1632, 1756, 2040, 2195, 2448, 2634, 2720, 2880, 3060, 3264, 3512, 3951, 4080, 4390, 4896, 5268, 5440, 6120, 6585, 7024, 7463, 7902, 8160, 8780, 9792, 10536, 12240, 13170, 14048, 14926, 15804, 16320, 17560, 19755, 21072, 22389, 24480, 26340, 28096, 29852, 31608, 35120, 37315, 39510, 42144, 44778, 48960, 52680, 59704, 63216, 67167, 70240, 74630, 79020, 84288, 89556, 105360, 111945, 119408, 126432, 134334, 140480, 149260, 158040, 179112, 210720, 223890, 238816, 252864, 268668, 298520, 316080, 335835, 358224, 421440, 447780, 477632, 537336, 597040, 632160, 671670, 716448, 895560, 1074672, 1194080, 1264320, 1343340, 1432896, 1791120, 2149344, 2388160, 2686680, 3582240, 4298688, 5373360, 7164480, 10746720, 21493440]

約数ペア:

[(1, 21493440), (2, 10746720), (3, 7164480), (4, 5373360), (5, 4298688), (6, 3582240), (8, 2686680), (9, 2388160), (10, 2149344), (12, 1791120), (15, 1432896), (16, 1343340), (17, 1264320), (18, 1194080), (20, 1074672), (24, 895560), (30, 716448), (32, 671670), (34, 632160), (36, 597040), (40, 537336), (45, 477632), (48, 447780), (51, 421440), (60, 358224), (64, 335835), (68, 316080), (72, 298520), (80, 268668), (85, 252864), (90, 238816), (96, 223890), (102, 210720), (120, 179112), (136, 158040), (144, 149260), (153, 140480), (160, 134334), (170, 126432), (180, 119408), (192, 111945), (204, 105360), (240, 89556), (255, 84288), (272, 79020), (288, 74630), (306, 70240), (320, 67167), (340, 63216), (360, 59704), (408, 52680), (439, 48960), (480, 44778), (510, 42144), (544, 39510), (576, 37315), (612, 35120), (680, 31608), (720, 29852), (765, 28096), (816, 26340), (878, 24480), (960, 22389), (1020, 21072), (1088, 19755), (1224, 17560), (1317, 16320), (1360, 15804), (1440, 14926), (1530, 14048), (1632, 13170), (1756, 12240), (2040, 10536), (2195, 9792), (2448, 8780), (2634, 8160), (2720, 7902), (2880, 7463), (3060, 7024), (3264, 6585), (3512, 6120), (3951, 5440), (4080, 5268), (4390, 4896)]