21377160

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{499}}^1$

素因数の和:540

約数の個数: 192

約数和(自身を含む): 84240000

約数和(自身を除く): 62862840

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 17, 18, 20, 21, 24, 28, 30, 34, 35, 36, 40, 42, 45, 51, 56, 60, 63, 68, 70, 72, 84, 85, 90, 102, 105, 119, 120, 126, 136, 140, 153, 168, 170, 180, 204, 210, 238, 252, 255, 280, 306, 315, 340, 357, 360, 408, 420, 476, 499, 504, 510, 595, 612, 630, 680, 714, 765, 840, 952, 998, 1020, 1071, 1190, 1224, 1260, 1428, 1497, 1530, 1785, 1996, 2040, 2142, 2380, 2495, 2520, 2856, 2994, 3060, 3493, 3570, 3992, 4284, 4491, 4760, 4990, 5355, 5988, 6120, 6986, 7140, 7485, 8483, 8568, 8982, 9980, 10479, 10710, 11976, 13972, 14280, 14970, 16966, 17465, 17964, 19960, 20958, 21420, 22455, 25449, 27944, 29940, 31437, 33932, 34930, 35928, 41916, 42415, 42840, 44910, 50898, 52395, 59381, 59880, 62874, 67864, 69860, 76347, 83832, 84830, 89820, 101796, 104790, 118762, 125748, 127245, 139720, 152694, 157185, 169660, 178143, 179640, 203592, 209580, 237524, 251496, 254490, 296905, 305388, 314370, 339320, 356286, 381735, 419160, 475048, 508980, 534429, 593810, 610776, 628740, 712572, 763470, 890715, 1017960, 1068858, 1187620, 1257480, 1425144, 1526940, 1781430, 2137716, 2375240, 2672145, 3053880, 3562860, 4275432, 5344290, 7125720, 10688580, 21377160]

約数ペア:

[(1, 21377160), (2, 10688580), (3, 7125720), (4, 5344290), (5, 4275432), (6, 3562860), (7, 3053880), (8, 2672145), (9, 2375240), (10, 2137716), (12, 1781430), (14, 1526940), (15, 1425144), (17, 1257480), (18, 1187620), (20, 1068858), (21, 1017960), (24, 890715), (28, 763470), (30, 712572), (34, 628740), (35, 610776), (36, 593810), (40, 534429), (42, 508980), (45, 475048), (51, 419160), (56, 381735), (60, 356286), (63, 339320), (68, 314370), (70, 305388), (72, 296905), (84, 254490), (85, 251496), (90, 237524), (102, 209580), (105, 203592), (119, 179640), (120, 178143), (126, 169660), (136, 157185), (140, 152694), (153, 139720), (168, 127245), (170, 125748), (180, 118762), (204, 104790), (210, 101796), (238, 89820), (252, 84830), (255, 83832), (280, 76347), (306, 69860), (315, 67864), (340, 62874), (357, 59880), (360, 59381), (408, 52395), (420, 50898), (476, 44910), (499, 42840), (504, 42415), (510, 41916), (595, 35928), (612, 34930), (630, 33932), (680, 31437), (714, 29940), (765, 27944), (840, 25449), (952, 22455), (998, 21420), (1020, 20958), (1071, 19960), (1190, 17964), (1224, 17465), (1260, 16966), (1428, 14970), (1497, 14280), (1530, 13972), (1785, 11976), (1996, 10710), (2040, 10479), (2142, 9980), (2380, 8982), (2495, 8568), (2520, 8483), (2856, 7485), (2994, 7140), (3060, 6986), (3493, 6120), (3570, 5988), (3992, 5355), (4284, 4990), (4491, 4760)]