20889176.000000000

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{211}}^1\times {\mathrm{307}}^1$

素因数の和:547

約数の個数: 160

約数和(自身を含む): 680123136

約数和(自身を除く): 478018896

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 78, 80, 104, 120, 130, 156, 195, 208, 211, 240, 260, 307, 312, 390, 422, 520, 614, 624, 633, 780, 844, 921, 1040, 1055, 1228, 1266, 1535, 1560, 1688, 1842, 2110, 2456, 2532, 2743, 3070, 3120, 3165, 3376, 3684, 3991, 4220, 4605, 4912, 5064, 5486, 6140, 6330, 7368, 7982, 8229, 8440, 9210, 10128, 10972, 11973, 12280, 12660, 13715, 14736, 15964, 16458, 16880, 18420, 19955, 21944, 23946, 24560, 25320, 27430, 31928, 32916, 36840, 39910, 41145, 43888, 47892, 50640, 54860, 59865, 63856, 64777, 65832, 73680, 79820, 82290, 95784, 109720, 119730, 129554, 131664, 159640, 164580, 191568, 194331, 219440, 239460, 259108, 319280, 323885, 329160, 388662, 478920, 518216, 647770, 658320, 777324, 842101, 957840, 971655, 1036432, 1295540, 1554648, 1684202, 1943310, 2526303, 2591080, 3109296, 3368404, 3886620, 4210505, 5052606, 5182160, 6736808, 7773240, 8421010, 10105212, 12631515, 13473616, 15546480, 16842020, 20210424, 25263030, 33684040, 40420848, 50526060, 67368080, 101052120, 202104240]

約数ペア:

[(1, 202104240), (2, 101052120), (3, 67368080), (4, 50526060), (5, 40420848), (6, 33684040), (8, 25263030), (10, 20210424), (12, 16842020), (13, 15546480), (15, 13473616), (16, 12631515), (20, 10105212), (24, 8421010), (26, 7773240), (30, 6736808), (39, 5182160), (40, 5052606), (48, 4210505), (52, 3886620), (60, 3368404), (65, 3109296), (78, 2591080), (80, 2526303), (104, 1943310), (120, 1684202), (130, 1554648), (156, 1295540), (195, 1036432), (208, 971655), (211, 957840), (240, 842101), (260, 777324), (307, 658320), (312, 647770), (390, 518216), (422, 478920), (520, 388662), (614, 329160), (624, 323885), (633, 319280), (780, 259108), (844, 239460), (921, 219440), (1040, 194331), (1055, 191568), (1228, 164580), (1266, 159640), (1535, 131664), (1560, 129554), (1688, 119730), (1842, 109720), (2110, 95784), (2456, 82290), (2532, 79820), (2743, 73680), (3070, 65832), (3120, 64777), (3165, 63856), (3376, 59865), (3684, 54860), (3991, 50640), (4220, 47892), (4605, 43888), (4912, 41145), (5064, 39910), (5486, 36840), (6140, 32916), (6330, 31928), (7368, 27430), (7982, 25320), (8229, 24560), (8440, 23946), (9210, 21944), (10128, 19955), (10972, 18420), (11973, 16880), (12280, 16458), (12660, 15964), (13715, 14736)]