405720

素因数分解:

$2^3\times 3^2\times 5^1\times 7^2\times {\mathrm{23}}^1$

素因数の和:54

約数の個数: 144

約数和(自身を含む): 1600560

約数和(自身を除く): 1194840

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 23, 24, 28, 30, 35, 36, 40, 42, 45, 46, 49, 56, 60, 63, 69, 70, 72, 84, 90, 92, 98, 105, 115, 120, 126, 138, 140, 147, 161, 168, 180, 184, 196, 207, 210, 230, 245, 252, 276, 280, 294, 315, 322, 345, 360, 392, 414, 420, 441, 460, 483, 490, 504, 552, 588, 630, 644, 690, 735, 805, 828, 840, 882, 920, 966, 980, 1035, 1127, 1176, 1260, 1288, 1380, 1449, 1470, 1610, 1656, 1764, 1932, 1960, 2070, 2205, 2254, 2415, 2520, 2760, 2898, 2940, 3220, 3381, 3528, 3864, 4140, 4410, 4508, 4830, 5635, 5796, 5880, 6440, 6762, 7245, 8280, 8820, 9016, 9660, 10143, 11270, 11592, 13524, 14490, 16905, 17640, 19320, 20286, 22540, 27048, 28980, 33810, 40572, 45080, 50715, 57960, 67620, 81144, 101430, 135240, 202860, 405720]

約数ペア:

[(1, 405720), (2, 202860), (3, 135240), (4, 101430), (5, 81144), (6, 67620), (7, 57960), (8, 50715), (9, 45080), (10, 40572), (12, 33810), (14, 28980), (15, 27048), (18, 22540), (20, 20286), (21, 19320), (23, 17640), (24, 16905), (28, 14490), (30, 13524), (35, 11592), (36, 11270), (40, 10143), (42, 9660), (45, 9016), (46, 8820), (49, 8280), (56, 7245), (60, 6762), (63, 6440), (69, 5880), (70, 5796), (72, 5635), (84, 4830), (90, 4508), (92, 4410), (98, 4140), (105, 3864), (115, 3528), (120, 3381), (126, 3220), (138, 2940), (140, 2898), (147, 2760), (161, 2520), (168, 2415), (180, 2254), (184, 2205), (196, 2070), (207, 1960), (210, 1932), (230, 1764), (245, 1656), (252, 1610), (276, 1470), (280, 1449), (294, 1380), (315, 1288), (322, 1260), (345, 1176), (360, 1127), (392, 1035), (414, 980), (420, 966), (441, 920), (460, 882), (483, 840), (490, 828), (504, 805), (552, 735), (588, 690), (630, 644)]