20859020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{157}}^1$

素因数の和:259

約数の個数: 96

約数和(自身を含む): 54999168

約数和(自身を除く): 34140148

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 73, 91, 130, 140, 146, 157, 182, 260, 292, 314, 364, 365, 455, 511, 628, 730, 785, 910, 949, 1022, 1099, 1460, 1570, 1820, 1898, 2041, 2044, 2198, 2555, 3140, 3796, 4082, 4396, 4745, 5110, 5495, 6643, 8164, 9490, 10205, 10220, 10990, 11461, 13286, 14287, 18980, 20410, 21980, 22922, 26572, 28574, 33215, 40820, 45844, 57148, 57305, 66430, 71435, 80227, 114610, 132860, 142870, 148993, 160454, 229220, 285740, 297986, 320908, 401135, 595972, 744965, 802270, 1042951, 1489930, 1604540, 2085902, 2979860, 4171804, 5214755, 10429510, 20859020]

約数ペア:

[(1, 20859020), (2, 10429510), (4, 5214755), (5, 4171804), (7, 2979860), (10, 2085902), (13, 1604540), (14, 1489930), (20, 1042951), (26, 802270), (28, 744965), (35, 595972), (52, 401135), (65, 320908), (70, 297986), (73, 285740), (91, 229220), (130, 160454), (140, 148993), (146, 142870), (157, 132860), (182, 114610), (260, 80227), (292, 71435), (314, 66430), (364, 57305), (365, 57148), (455, 45844), (511, 40820), (628, 33215), (730, 28574), (785, 26572), (910, 22922), (949, 21980), (1022, 20410), (1099, 18980), (1460, 14287), (1570, 13286), (1820, 11461), (1898, 10990), (2041, 10220), (2044, 10205), (2198, 9490), (2555, 8164), (3140, 6643), (3796, 5495), (4082, 5110), (4396, 4745)]