19915840

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{523}}^1$

素因数の和:564

約数の個数: 112

約数和(自身を含む): 57497472

約数和(自身を除く): 37581632

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 20, 28, 32, 34, 35, 40, 56, 64, 68, 70, 80, 85, 112, 119, 136, 140, 160, 170, 224, 238, 272, 280, 320, 340, 448, 476, 523, 544, 560, 595, 680, 952, 1046, 1088, 1120, 1190, 1360, 1904, 2092, 2240, 2380, 2615, 2720, 3661, 3808, 4184, 4760, 5230, 5440, 7322, 7616, 8368, 8891, 9520, 10460, 14644, 16736, 17782, 18305, 19040, 20920, 29288, 33472, 35564, 36610, 38080, 41840, 44455, 58576, 62237, 71128, 73220, 83680, 88910, 117152, 124474, 142256, 146440, 167360, 177820, 234304, 248948, 284512, 292880, 311185, 355640, 497896, 569024, 585760, 622370, 711280, 995792, 1171520, 1244740, 1422560, 1991584, 2489480, 2845120, 3983168, 4978960, 9957920, 19915840]

約数ペア:

[(1, 19915840), (2, 9957920), (4, 4978960), (5, 3983168), (7, 2845120), (8, 2489480), (10, 1991584), (14, 1422560), (16, 1244740), (17, 1171520), (20, 995792), (28, 711280), (32, 622370), (34, 585760), (35, 569024), (40, 497896), (56, 355640), (64, 311185), (68, 292880), (70, 284512), (80, 248948), (85, 234304), (112, 177820), (119, 167360), (136, 146440), (140, 142256), (160, 124474), (170, 117152), (224, 88910), (238, 83680), (272, 73220), (280, 71128), (320, 62237), (340, 58576), (448, 44455), (476, 41840), (523, 38080), (544, 36610), (560, 35564), (595, 33472), (680, 29288), (952, 20920), (1046, 19040), (1088, 18305), (1120, 17782), (1190, 16736), (1360, 14644), (1904, 10460), (2092, 9520), (2240, 8891), (2380, 8368), (2615, 7616), (2720, 7322), (3661, 5440), (3808, 5230), (4184, 4760)]