638508240

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{28607}}^1$

素因数の和:28657

約数の個数: 120

約数和(自身を含む): 2213572608

約数和(自身を除く): 1575064368

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 31, 36, 40, 45, 48, 60, 62, 72, 80, 90, 93, 120, 124, 144, 155, 180, 186, 240, 248, 279, 310, 360, 372, 465, 496, 558, 620, 720, 744, 930, 1116, 1240, 1395, 1488, 1860, 2232, 2480, 2790, 3720, 4464, 5580, 7440, 11160, 22320, 28607, 57214, 85821, 114428, 143035, 171642, 228856, 257463, 286070, 343284, 429105, 457712, 514926, 572140, 686568, 858210, 886817, 1029852, 1144280, 1287315, 1373136, 1716420, 1773634, 2059704, 2288560, 2574630, 2660451, 3432840, 3547268, 4119408, 4434085, 5149260, 5320902, 6865680, 7094536, 7981353, 8868170, 10298520, 10641804, 13302255, 14189072, 15962706, 17736340, 20597040, 21283608, 26604510, 31925412, 35472680, 39906765, 42567216, 53209020, 63850824, 70945360, 79813530, 106418040, 127701648, 159627060, 212836080, 319254120, 638508240]

約数ペア:

[(1, 638508240), (2, 319254120), (3, 212836080), (4, 159627060), (5, 127701648), (6, 106418040), (8, 79813530), (9, 70945360), (10, 63850824), (12, 53209020), (15, 42567216), (16, 39906765), (18, 35472680), (20, 31925412), (24, 26604510), (30, 21283608), (31, 20597040), (36, 17736340), (40, 15962706), (45, 14189072), (48, 13302255), (60, 10641804), (62, 10298520), (72, 8868170), (80, 7981353), (90, 7094536), (93, 6865680), (120, 5320902), (124, 5149260), (144, 4434085), (155, 4119408), (180, 3547268), (186, 3432840), (240, 2660451), (248, 2574630), (279, 2288560), (310, 2059704), (360, 1773634), (372, 1716420), (465, 1373136), (496, 1287315), (558, 1144280), (620, 1029852), (720, 886817), (744, 858210), (930, 686568), (1116, 572140), (1240, 514926), (1395, 457712), (1488, 429105), (1860, 343284), (2232, 286070), (2480, 257463), (2790, 228856), (3720, 171642), (4464, 143035), (5580, 114428), (7440, 85821), (11160, 57214), (22320, 28607)]