642645760

素因数分解:

$2^8\times 5^1\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{263}}^1$

素因数の和:390

約数の個数: 144

約数和(自身を含む): 1631798784

約数和(自身を除く): 989153024

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 64, 80, 83, 92, 115, 128, 160, 166, 184, 230, 256, 263, 320, 332, 368, 415, 460, 526, 640, 664, 736, 830, 920, 1052, 1280, 1315, 1328, 1472, 1660, 1840, 1909, 2104, 2630, 2656, 2944, 3320, 3680, 3818, 4208, 5260, 5312, 5888, 6049, 6640, 7360, 7636, 8416, 9545, 10520, 10624, 12098, 13280, 14720, 15272, 16832, 19090, 21040, 21248, 21829, 24196, 26560, 29440, 30245, 30544, 33664, 38180, 42080, 43658, 48392, 53120, 60490, 61088, 67328, 76360, 84160, 87316, 96784, 106240, 109145, 120980, 122176, 152720, 168320, 174632, 193568, 218290, 241960, 244352, 305440, 336640, 349264, 387136, 436580, 483920, 488704, 502067, 610880, 698528, 774272, 873160, 967840, 1004134, 1221760, 1397056, 1548544, 1746320, 1935680, 2008268, 2443520, 2510335, 2794112, 3492640, 3871360, 4016536, 5020670, 5588224, 6985280, 7742720, 8033072, 10041340, 13970560, 16066144, 20082680, 27941120, 32132288, 40165360, 64264576, 80330720, 128529152, 160661440, 321322880, 642645760]

約数ペア:

[(1, 642645760), (2, 321322880), (4, 160661440), (5, 128529152), (8, 80330720), (10, 64264576), (16, 40165360), (20, 32132288), (23, 27941120), (32, 20082680), (40, 16066144), (46, 13970560), (64, 10041340), (80, 8033072), (83, 7742720), (92, 6985280), (115, 5588224), (128, 5020670), (160, 4016536), (166, 3871360), (184, 3492640), (230, 2794112), (256, 2510335), (263, 2443520), (320, 2008268), (332, 1935680), (368, 1746320), (415, 1548544), (460, 1397056), (526, 1221760), (640, 1004134), (664, 967840), (736, 873160), (830, 774272), (920, 698528), (1052, 610880), (1280, 502067), (1315, 488704), (1328, 483920), (1472, 436580), (1660, 387136), (1840, 349264), (1909, 336640), (2104, 305440), (2630, 244352), (2656, 241960), (2944, 218290), (3320, 193568), (3680, 174632), (3818, 168320), (4208, 152720), (5260, 122176), (5312, 120980), (5888, 109145), (6049, 106240), (6640, 96784), (7360, 87316), (7636, 84160), (8416, 76360), (9545, 67328), (10520, 61088), (10624, 60490), (12098, 53120), (13280, 48392), (14720, 43658), (15272, 42080), (16832, 38180), (19090, 33664), (21040, 30544), (21248, 30245), (21829, 29440), (24196, 26560)]