128985720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1\times {\mathrm{263}}^1$

素因数の和:405

約数の個数: 128

約数和(自身を含む): 400688640

約数和(自身を除く): 271702920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 61, 67, 120, 122, 134, 183, 201, 244, 263, 268, 305, 335, 366, 402, 488, 526, 536, 610, 670, 732, 789, 804, 915, 1005, 1052, 1220, 1315, 1340, 1464, 1578, 1608, 1830, 2010, 2104, 2440, 2630, 2680, 3156, 3660, 3945, 4020, 4087, 5260, 6312, 7320, 7890, 8040, 8174, 10520, 12261, 15780, 16043, 16348, 17621, 20435, 24522, 31560, 32086, 32696, 35242, 40870, 48129, 49044, 52863, 61305, 64172, 70484, 80215, 81740, 88105, 96258, 98088, 105726, 122610, 128344, 140968, 160430, 163480, 176210, 192516, 211452, 240645, 245220, 264315, 320860, 352420, 385032, 422904, 481290, 490440, 528630, 641720, 704840, 962580, 1057260, 1074881, 1925160, 2114520, 2149762, 3224643, 4299524, 5374405, 6449286, 8599048, 10748810, 12898572, 16123215, 21497620, 25797144, 32246430, 42995240, 64492860, 128985720]

約数ペア:

[(1, 128985720), (2, 64492860), (3, 42995240), (4, 32246430), (5, 25797144), (6, 21497620), (8, 16123215), (10, 12898572), (12, 10748810), (15, 8599048), (20, 6449286), (24, 5374405), (30, 4299524), (40, 3224643), (60, 2149762), (61, 2114520), (67, 1925160), (120, 1074881), (122, 1057260), (134, 962580), (183, 704840), (201, 641720), (244, 528630), (263, 490440), (268, 481290), (305, 422904), (335, 385032), (366, 352420), (402, 320860), (488, 264315), (526, 245220), (536, 240645), (610, 211452), (670, 192516), (732, 176210), (789, 163480), (804, 160430), (915, 140968), (1005, 128344), (1052, 122610), (1220, 105726), (1315, 98088), (1340, 96258), (1464, 88105), (1578, 81740), (1608, 80215), (1830, 70484), (2010, 64172), (2104, 61305), (2440, 52863), (2630, 49044), (2680, 48129), (3156, 40870), (3660, 35242), (3945, 32696), (4020, 32086), (4087, 31560), (5260, 24522), (6312, 20435), (7320, 17621), (7890, 16348), (8040, 16043), (8174, 15780), (10520, 12261)]