18259930

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{197}}^1$

素因数の和:271

約数の個数: 64

約数和(自身を含む): 38320128

約数和(自身を除く): 20060198

約数列:

[1, 2, 5, 10, 13, 23, 26, 31, 46, 62, 65, 115, 130, 155, 197, 230, 299, 310, 394, 403, 598, 713, 806, 985, 1426, 1495, 1970, 2015, 2561, 2990, 3565, 4030, 4531, 5122, 6107, 7130, 9062, 9269, 12214, 12805, 18538, 22655, 25610, 30535, 45310, 46345, 58903, 61070, 79391, 92690, 117806, 140461, 158782, 280922, 294515, 396955, 589030, 702305, 793910, 1404610, 1825993, 3651986, 9129965, 18259930]

約数ペア:

[(1, 18259930), (2, 9129965), (5, 3651986), (10, 1825993), (13, 1404610), (23, 793910), (26, 702305), (31, 589030), (46, 396955), (62, 294515), (65, 280922), (115, 158782), (130, 140461), (155, 117806), (197, 92690), (230, 79391), (299, 61070), (310, 58903), (394, 46345), (403, 45310), (598, 30535), (713, 25610), (806, 22655), (985, 18538), (1426, 12805), (1495, 12214), (1970, 9269), (2015, 9062), (2561, 7130), (2990, 6107), (3565, 5122), (4030, 4531)]