20399160

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{389}}^1$

素因数の和:445

約数の個数: 128

約数和(自身を含む): 67392000

約数和(自身を除く): 46992840

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 19, 20, 23, 24, 30, 38, 40, 46, 57, 60, 69, 76, 92, 95, 114, 115, 120, 138, 152, 184, 190, 228, 230, 276, 285, 345, 380, 389, 437, 456, 460, 552, 570, 690, 760, 778, 874, 920, 1140, 1167, 1311, 1380, 1556, 1748, 1945, 2185, 2280, 2334, 2622, 2760, 3112, 3496, 3890, 4370, 4668, 5244, 5835, 6555, 7391, 7780, 8740, 8947, 9336, 10488, 11670, 13110, 14782, 15560, 17480, 17894, 22173, 23340, 26220, 26841, 29564, 35788, 36955, 44346, 44735, 46680, 52440, 53682, 59128, 71576, 73910, 88692, 89470, 107364, 110865, 134205, 147820, 169993, 177384, 178940, 214728, 221730, 268410, 295640, 339986, 357880, 443460, 509979, 536820, 679972, 849965, 886920, 1019958, 1073640, 1359944, 1699930, 2039916, 2549895, 3399860, 4079832, 5099790, 6799720, 10199580, 20399160]

約数ペア:

[(1, 20399160), (2, 10199580), (3, 6799720), (4, 5099790), (5, 4079832), (6, 3399860), (8, 2549895), (10, 2039916), (12, 1699930), (15, 1359944), (19, 1073640), (20, 1019958), (23, 886920), (24, 849965), (30, 679972), (38, 536820), (40, 509979), (46, 443460), (57, 357880), (60, 339986), (69, 295640), (76, 268410), (92, 221730), (95, 214728), (114, 178940), (115, 177384), (120, 169993), (138, 147820), (152, 134205), (184, 110865), (190, 107364), (228, 89470), (230, 88692), (276, 73910), (285, 71576), (345, 59128), (380, 53682), (389, 52440), (437, 46680), (456, 44735), (460, 44346), (552, 36955), (570, 35788), (690, 29564), (760, 26841), (778, 26220), (874, 23340), (920, 22173), (1140, 17894), (1167, 17480), (1311, 15560), (1380, 14782), (1556, 13110), (1748, 11670), (1945, 10488), (2185, 9336), (2280, 8947), (2334, 8740), (2622, 7780), (2760, 7391), (3112, 6555), (3496, 5835), (3890, 5244), (4370, 4668)]