18915206520

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{823}}^1\times {\mathrm{27361}}^1$

素因数の和:28205

約数の個数: 128

約数和(自身を含む): 64933309440

約数和(自身を除く): 46018102920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 823, 840, 1646, 2469, 3292, 4115, 4938, 5761, 6584, 8230, 9876, 11522, 12345, 16460, 17283, 19752, 23044, 24690, 27361, 28805, 32920, 34566, 46088, 49380, 54722, 57610, 69132, 82083, 86415, 98760, 109444, 115220, 136805, 138264, 164166, 172830, 191527, 218888, 230440, 273610, 328332, 345660, 383054, 410415, 547220, 574581, 656664, 691320, 766108, 820830, 957635, 1094440, 1149162, 1532216, 1641660, 1915270, 2298324, 2872905, 3283320, 3830540, 4596648, 5745810, 7661080, 11491620, 22518103, 22983240, 45036206, 67554309, 90072412, 112590515, 135108618, 157626721, 180144824, 225181030, 270217236, 315253442, 337771545, 450362060, 472880163, 540434472, 630506884, 675543090, 788133605, 900724120, 945760326, 1261013768, 1351086180, 1576267210, 1891520652, 2364400815, 2702172360, 3152534420, 3783041304, 4728801630, 6305068840, 9457603260, 18915206520]

約数ペア:

[(1, 18915206520), (2, 9457603260), (3, 6305068840), (4, 4728801630), (5, 3783041304), (6, 3152534420), (7, 2702172360), (8, 2364400815), (10, 1891520652), (12, 1576267210), (14, 1351086180), (15, 1261013768), (20, 945760326), (21, 900724120), (24, 788133605), (28, 675543090), (30, 630506884), (35, 540434472), (40, 472880163), (42, 450362060), (56, 337771545), (60, 315253442), (70, 270217236), (84, 225181030), (105, 180144824), (120, 157626721), (140, 135108618), (168, 112590515), (210, 90072412), (280, 67554309), (420, 45036206), (823, 22983240), (840, 22518103), (1646, 11491620), (2469, 7661080), (3292, 5745810), (4115, 4596648), (4938, 3830540), (5761, 3283320), (6584, 2872905), (8230, 2298324), (9876, 1915270), (11522, 1641660), (12345, 1532216), (16460, 1149162), (17283, 1094440), (19752, 957635), (23044, 820830), (24690, 766108), (27361, 691320), (28805, 656664), (32920, 574581), (34566, 547220), (46088, 410415), (49380, 383054), (54722, 345660), (57610, 328332), (69132, 273610), (82083, 230440), (86415, 218888), (98760, 191527), (109444, 172830), (115220, 164166), (136805, 138264)]