20574080

素因数分解:

$2^7\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1$

素因数の和:128

約数の個数: 128

約数和(自身を含む): 54639360

約数和(自身を除く): 34065280

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 31, 32, 34, 40, 61, 62, 64, 68, 80, 85, 122, 124, 128, 136, 155, 160, 170, 244, 248, 272, 305, 310, 320, 340, 488, 496, 527, 544, 610, 620, 640, 680, 976, 992, 1037, 1054, 1088, 1220, 1240, 1360, 1891, 1952, 1984, 2074, 2108, 2176, 2440, 2480, 2635, 2720, 3782, 3904, 3968, 4148, 4216, 4880, 4960, 5185, 5270, 5440, 7564, 7808, 8296, 8432, 9455, 9760, 9920, 10370, 10540, 10880, 15128, 16592, 16864, 18910, 19520, 19840, 20740, 21080, 30256, 32147, 33184, 33728, 37820, 39040, 41480, 42160, 60512, 64294, 66368, 67456, 75640, 82960, 84320, 121024, 128588, 132736, 151280, 160735, 165920, 168640, 242048, 257176, 302560, 321470, 331840, 337280, 514352, 605120, 642940, 663680, 1028704, 1210240, 1285880, 2057408, 2571760, 4114816, 5143520, 10287040, 20574080]

約数ペア:

[(1, 20574080), (2, 10287040), (4, 5143520), (5, 4114816), (8, 2571760), (10, 2057408), (16, 1285880), (17, 1210240), (20, 1028704), (31, 663680), (32, 642940), (34, 605120), (40, 514352), (61, 337280), (62, 331840), (64, 321470), (68, 302560), (80, 257176), (85, 242048), (122, 168640), (124, 165920), (128, 160735), (136, 151280), (155, 132736), (160, 128588), (170, 121024), (244, 84320), (248, 82960), (272, 75640), (305, 67456), (310, 66368), (320, 64294), (340, 60512), (488, 42160), (496, 41480), (527, 39040), (544, 37820), (610, 33728), (620, 33184), (640, 32147), (680, 30256), (976, 21080), (992, 20740), (1037, 19840), (1054, 19520), (1088, 18910), (1220, 16864), (1240, 16592), (1360, 15128), (1891, 10880), (1952, 10540), (1984, 10370), (2074, 9920), (2108, 9760), (2176, 9455), (2440, 8432), (2480, 8296), (2635, 7808), (2720, 7564), (3782, 5440), (3904, 5270), (3968, 5185), (4148, 4960), (4216, 4880)]