21659760

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{449}}^1$

素因数の和:535

約数の個数: 120

約数和(自身を含む): 73990800

約数和(自身を除く): 52331040

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 67, 72, 80, 90, 120, 134, 144, 180, 201, 240, 268, 335, 360, 402, 449, 536, 603, 670, 720, 804, 898, 1005, 1072, 1206, 1340, 1347, 1608, 1796, 2010, 2245, 2412, 2680, 2694, 3015, 3216, 3592, 4020, 4041, 4490, 4824, 5360, 5388, 6030, 6735, 7184, 8040, 8082, 8980, 9648, 10776, 12060, 13470, 16080, 16164, 17960, 20205, 21552, 24120, 26940, 30083, 32328, 35920, 40410, 48240, 53880, 60166, 64656, 80820, 90249, 107760, 120332, 150415, 161640, 180498, 240664, 270747, 300830, 323280, 360996, 451245, 481328, 541494, 601660, 721992, 902490, 1082988, 1203320, 1353735, 1443984, 1804980, 2165976, 2406640, 2707470, 3609960, 4331952, 5414940, 7219920, 10829880, 21659760]

約数ペア:

[(1, 21659760), (2, 10829880), (3, 7219920), (4, 5414940), (5, 4331952), (6, 3609960), (8, 2707470), (9, 2406640), (10, 2165976), (12, 1804980), (15, 1443984), (16, 1353735), (18, 1203320), (20, 1082988), (24, 902490), (30, 721992), (36, 601660), (40, 541494), (45, 481328), (48, 451245), (60, 360996), (67, 323280), (72, 300830), (80, 270747), (90, 240664), (120, 180498), (134, 161640), (144, 150415), (180, 120332), (201, 107760), (240, 90249), (268, 80820), (335, 64656), (360, 60166), (402, 53880), (449, 48240), (536, 40410), (603, 35920), (670, 32328), (720, 30083), (804, 26940), (898, 24120), (1005, 21552), (1072, 20205), (1206, 17960), (1340, 16164), (1347, 16080), (1608, 13470), (1796, 12060), (2010, 10776), (2245, 9648), (2412, 8980), (2680, 8082), (2694, 8040), (3015, 7184), (3216, 6735), (3592, 6030), (4020, 5388), (4041, 5360), (4490, 4824)]