20460440

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1$

素因数の和:122

約数の個数: 192

約数和(自身を含む): 63776160

約数和(自身を除く): 43315720

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 13, 14, 20, 22, 26, 28, 35, 40, 44, 49, 52, 55, 56, 65, 70, 73, 77, 88, 91, 98, 104, 110, 130, 140, 143, 146, 154, 182, 196, 220, 245, 260, 280, 286, 292, 308, 364, 365, 385, 392, 440, 455, 490, 511, 520, 539, 572, 584, 616, 637, 715, 728, 730, 770, 803, 910, 949, 980, 1001, 1022, 1078, 1144, 1274, 1430, 1460, 1540, 1606, 1820, 1898, 1960, 2002, 2044, 2156, 2548, 2555, 2695, 2860, 2920, 3080, 3185, 3212, 3577, 3640, 3796, 4004, 4015, 4088, 4312, 4745, 5005, 5096, 5110, 5390, 5621, 5720, 6370, 6424, 6643, 7007, 7154, 7592, 8008, 8030, 9490, 10010, 10220, 10439, 10780, 11242, 12740, 13286, 14014, 14308, 16060, 17885, 18980, 20020, 20440, 20878, 21560, 22484, 25480, 26572, 28028, 28105, 28616, 32120, 33215, 35035, 35770, 37960, 39347, 40040, 41756, 44968, 46501, 52195, 53144, 56056, 56210, 66430, 70070, 71540, 73073, 78694, 83512, 93002, 104390, 112420, 132860, 140140, 143080, 146146, 157388, 186004, 196735, 208780, 224840, 232505, 265720, 280280, 292292, 314776, 365365, 372008, 393470, 417560, 465010, 511511, 584584, 730730, 786940, 930020, 1023022, 1461460, 1573880, 1860040, 2046044, 2557555, 2922920, 4092088, 5115110, 10230220, 20460440]

約数ペア:

[(1, 20460440), (2, 10230220), (4, 5115110), (5, 4092088), (7, 2922920), (8, 2557555), (10, 2046044), (11, 1860040), (13, 1573880), (14, 1461460), (20, 1023022), (22, 930020), (26, 786940), (28, 730730), (35, 584584), (40, 511511), (44, 465010), (49, 417560), (52, 393470), (55, 372008), (56, 365365), (65, 314776), (70, 292292), (73, 280280), (77, 265720), (88, 232505), (91, 224840), (98, 208780), (104, 196735), (110, 186004), (130, 157388), (140, 146146), (143, 143080), (146, 140140), (154, 132860), (182, 112420), (196, 104390), (220, 93002), (245, 83512), (260, 78694), (280, 73073), (286, 71540), (292, 70070), (308, 66430), (364, 56210), (365, 56056), (385, 53144), (392, 52195), (440, 46501), (455, 44968), (490, 41756), (511, 40040), (520, 39347), (539, 37960), (572, 35770), (584, 35035), (616, 33215), (637, 32120), (715, 28616), (728, 28105), (730, 28028), (770, 26572), (803, 25480), (910, 22484), (949, 21560), (980, 20878), (1001, 20440), (1022, 20020), (1078, 18980), (1144, 17885), (1274, 16060), (1430, 14308), (1460, 14014), (1540, 13286), (1606, 12740), (1820, 11242), (1898, 10780), (1960, 10439), (2002, 10220), (2044, 10010), (2156, 9490), (2548, 8030), (2555, 8008), (2695, 7592), (2860, 7154), (2920, 7007), (3080, 6643), (3185, 6424), (3212, 6370), (3577, 5720), (3640, 5621), (3796, 5390), (4004, 5110), (4015, 5096), (4088, 5005), (4312, 4745)]