20623040

素因数分解:

$2^6\times 5^1\times {\mathrm{17}}^2\times {\mathrm{223}}^1$

素因数の和:274

約数の個数: 84

約数和(自身を含む): 52401216

約数和(自身を除く): 31778176

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 136, 160, 170, 223, 272, 289, 320, 340, 446, 544, 578, 680, 892, 1088, 1115, 1156, 1360, 1445, 1784, 2230, 2312, 2720, 2890, 3568, 3791, 4460, 4624, 5440, 5780, 7136, 7582, 8920, 9248, 11560, 14272, 15164, 17840, 18496, 18955, 23120, 30328, 35680, 37910, 46240, 60656, 64447, 71360, 75820, 92480, 121312, 128894, 151640, 242624, 257788, 303280, 322235, 515576, 606560, 644470, 1031152, 1213120, 1288940, 2062304, 2577880, 4124608, 5155760, 10311520, 20623040]

約数ペア:

[(1, 20623040), (2, 10311520), (4, 5155760), (5, 4124608), (8, 2577880), (10, 2062304), (16, 1288940), (17, 1213120), (20, 1031152), (32, 644470), (34, 606560), (40, 515576), (64, 322235), (68, 303280), (80, 257788), (85, 242624), (136, 151640), (160, 128894), (170, 121312), (223, 92480), (272, 75820), (289, 71360), (320, 64447), (340, 60656), (446, 46240), (544, 37910), (578, 35680), (680, 30328), (892, 23120), (1088, 18955), (1115, 18496), (1156, 17840), (1360, 15164), (1445, 14272), (1784, 11560), (2230, 9248), (2312, 8920), (2720, 7582), (2890, 7136), (3568, 5780), (3791, 5440), (4460, 4624)]