21237760

素因数分解:

$2^{12}\times 5^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1$

素因数の和:107

約数の個数: 104

約数和(自身を含む): 54846936

約数和(自身を除く): 33609176

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 61, 64, 68, 80, 85, 122, 128, 136, 160, 170, 244, 256, 272, 305, 320, 340, 488, 512, 544, 610, 640, 680, 976, 1024, 1037, 1088, 1220, 1280, 1360, 1952, 2048, 2074, 2176, 2440, 2560, 2720, 3904, 4096, 4148, 4352, 4880, 5120, 5185, 5440, 7808, 8296, 8704, 9760, 10240, 10370, 10880, 15616, 16592, 17408, 19520, 20480, 20740, 21760, 31232, 33184, 34816, 39040, 41480, 43520, 62464, 66368, 69632, 78080, 82960, 87040, 124928, 132736, 156160, 165920, 174080, 249856, 265472, 312320, 331840, 348160, 530944, 624640, 663680, 1061888, 1249280, 1327360, 2123776, 2654720, 4247552, 5309440, 10618880, 21237760]

約数ペア:

[(1, 21237760), (2, 10618880), (4, 5309440), (5, 4247552), (8, 2654720), (10, 2123776), (16, 1327360), (17, 1249280), (20, 1061888), (32, 663680), (34, 624640), (40, 530944), (61, 348160), (64, 331840), (68, 312320), (80, 265472), (85, 249856), (122, 174080), (128, 165920), (136, 156160), (160, 132736), (170, 124928), (244, 87040), (256, 82960), (272, 78080), (305, 69632), (320, 66368), (340, 62464), (488, 43520), (512, 41480), (544, 39040), (610, 34816), (640, 33184), (680, 31232), (976, 21760), (1024, 20740), (1037, 20480), (1088, 19520), (1220, 17408), (1280, 16592), (1360, 15616), (1952, 10880), (2048, 10370), (2074, 10240), (2176, 9760), (2440, 8704), (2560, 8296), (2720, 7808), (3904, 5440), (4096, 5185), (4148, 5120), (4352, 4880)]