20389590

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{157}}^1$

素因数の和:223

約数の個数: 128

約数和(自身を含む): 60520320

約数和(自身を除く): 40130730

約数列:

[1, 2, 3, 5, 6, 9, 10, 13, 15, 18, 26, 27, 30, 37, 39, 45, 54, 65, 74, 78, 90, 111, 117, 130, 135, 157, 185, 195, 222, 234, 270, 314, 333, 351, 370, 390, 471, 481, 555, 585, 666, 702, 785, 942, 962, 999, 1110, 1170, 1413, 1443, 1570, 1665, 1755, 1998, 2041, 2355, 2405, 2826, 2886, 3330, 3510, 4082, 4239, 4329, 4710, 4810, 4995, 5809, 6123, 7065, 7215, 8478, 8658, 9990, 10205, 11618, 12246, 12987, 14130, 14430, 17427, 18369, 20410, 21195, 21645, 25974, 29045, 30615, 34854, 36738, 42390, 43290, 52281, 55107, 58090, 61230, 64935, 75517, 87135, 91845, 104562, 110214, 129870, 151034, 156843, 174270, 183690, 226551, 261405, 275535, 313686, 377585, 453102, 522810, 551070, 679653, 755170, 784215, 1132755, 1359306, 1568430, 2038959, 2265510, 3398265, 4077918, 6796530, 10194795, 20389590]

約数ペア:

[(1, 20389590), (2, 10194795), (3, 6796530), (5, 4077918), (6, 3398265), (9, 2265510), (10, 2038959), (13, 1568430), (15, 1359306), (18, 1132755), (26, 784215), (27, 755170), (30, 679653), (37, 551070), (39, 522810), (45, 453102), (54, 377585), (65, 313686), (74, 275535), (78, 261405), (90, 226551), (111, 183690), (117, 174270), (130, 156843), (135, 151034), (157, 129870), (185, 110214), (195, 104562), (222, 91845), (234, 87135), (270, 75517), (314, 64935), (333, 61230), (351, 58090), (370, 55107), (390, 52281), (471, 43290), (481, 42390), (555, 36738), (585, 34854), (666, 30615), (702, 29045), (785, 25974), (942, 21645), (962, 21195), (999, 20410), (1110, 18369), (1170, 17427), (1413, 14430), (1443, 14130), (1570, 12987), (1665, 12246), (1755, 11618), (1998, 10205), (2041, 9990), (2355, 8658), (2405, 8478), (2826, 7215), (2886, 7065), (3330, 6123), (3510, 5809), (4082, 4995), (4239, 4810), (4329, 4710)]