21304080

素因数分解:

$2^4\times 3^3\times 5^1\times 7^1\times {\mathrm{1409}}^1$

素因数の和:1438

約数の個数: 160

約数和(自身を含む): 83923200

約数和(自身を除く): 62619120

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 48, 54, 56, 60, 63, 70, 72, 80, 84, 90, 105, 108, 112, 120, 126, 135, 140, 144, 168, 180, 189, 210, 216, 240, 252, 270, 280, 315, 336, 360, 378, 420, 432, 504, 540, 560, 630, 720, 756, 840, 945, 1008, 1080, 1260, 1409, 1512, 1680, 1890, 2160, 2520, 2818, 3024, 3780, 4227, 5040, 5636, 7045, 7560, 8454, 9863, 11272, 12681, 14090, 15120, 16908, 19726, 21135, 22544, 25362, 28180, 29589, 33816, 38043, 39452, 42270, 49315, 50724, 56360, 59178, 63405, 67632, 76086, 78904, 84540, 88767, 98630, 101448, 112720, 118356, 126810, 147945, 152172, 157808, 169080, 177534, 190215, 197260, 202896, 236712, 253620, 266301, 295890, 304344, 338160, 355068, 380430, 394520, 443835, 473424, 507240, 532602, 591780, 608688, 710136, 760860, 789040, 887670, 1014480, 1065204, 1183560, 1331505, 1420272, 1521720, 1775340, 2130408, 2367120, 2663010, 3043440, 3550680, 4260816, 5326020, 7101360, 10652040, 21304080]

約数ペア:

[(1, 21304080), (2, 10652040), (3, 7101360), (4, 5326020), (5, 4260816), (6, 3550680), (7, 3043440), (8, 2663010), (9, 2367120), (10, 2130408), (12, 1775340), (14, 1521720), (15, 1420272), (16, 1331505), (18, 1183560), (20, 1065204), (21, 1014480), (24, 887670), (27, 789040), (28, 760860), (30, 710136), (35, 608688), (36, 591780), (40, 532602), (42, 507240), (45, 473424), (48, 443835), (54, 394520), (56, 380430), (60, 355068), (63, 338160), (70, 304344), (72, 295890), (80, 266301), (84, 253620), (90, 236712), (105, 202896), (108, 197260), (112, 190215), (120, 177534), (126, 169080), (135, 157808), (140, 152172), (144, 147945), (168, 126810), (180, 118356), (189, 112720), (210, 101448), (216, 98630), (240, 88767), (252, 84540), (270, 78904), (280, 76086), (315, 67632), (336, 63405), (360, 59178), (378, 56360), (420, 50724), (432, 49315), (504, 42270), (540, 39452), (560, 38043), (630, 33816), (720, 29589), (756, 28180), (840, 25362), (945, 22544), (1008, 21135), (1080, 19726), (1260, 16908), (1409, 15120), (1512, 14090), (1680, 12681), (1890, 11272), (2160, 9863), (2520, 8454), (2818, 7560), (3024, 7045), (3780, 5636), (4227, 5040)]