978814720

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{997}}^1$

素因数の和:1090

約数の個数: 144

約数和(自身を含む): 2570289120

約数和(自身を除く): 1591474400

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 59, 64, 65, 80, 104, 118, 128, 130, 160, 208, 236, 256, 260, 295, 320, 416, 472, 520, 590, 640, 767, 832, 944, 997, 1040, 1180, 1280, 1534, 1664, 1888, 1994, 2080, 2360, 3068, 3328, 3776, 3835, 3988, 4160, 4720, 4985, 6136, 7552, 7670, 7976, 8320, 9440, 9970, 12272, 12961, 15104, 15340, 15952, 16640, 18880, 19940, 24544, 25922, 30680, 31904, 37760, 39880, 49088, 51844, 58823, 61360, 63808, 64805, 75520, 79760, 98176, 103688, 117646, 122720, 127616, 129610, 159520, 196352, 207376, 235292, 245440, 255232, 259220, 294115, 319040, 414752, 470584, 490880, 518440, 588230, 638080, 764699, 829504, 941168, 981760, 1036880, 1176460, 1276160, 1529398, 1659008, 1882336, 2073760, 2352920, 3058796, 3318016, 3764672, 3823495, 4147520, 4705840, 6117592, 7529344, 7646990, 8295040, 9411680, 12235184, 15058688, 15293980, 16590080, 18823360, 24470368, 30587960, 37646720, 48940736, 61175920, 75293440, 97881472, 122351840, 195762944, 244703680, 489407360, 978814720]

約数ペア:

[(1, 978814720), (2, 489407360), (4, 244703680), (5, 195762944), (8, 122351840), (10, 97881472), (13, 75293440), (16, 61175920), (20, 48940736), (26, 37646720), (32, 30587960), (40, 24470368), (52, 18823360), (59, 16590080), (64, 15293980), (65, 15058688), (80, 12235184), (104, 9411680), (118, 8295040), (128, 7646990), (130, 7529344), (160, 6117592), (208, 4705840), (236, 4147520), (256, 3823495), (260, 3764672), (295, 3318016), (320, 3058796), (416, 2352920), (472, 2073760), (520, 1882336), (590, 1659008), (640, 1529398), (767, 1276160), (832, 1176460), (944, 1036880), (997, 981760), (1040, 941168), (1180, 829504), (1280, 764699), (1534, 638080), (1664, 588230), (1888, 518440), (1994, 490880), (2080, 470584), (2360, 414752), (3068, 319040), (3328, 294115), (3776, 259220), (3835, 255232), (3988, 245440), (4160, 235292), (4720, 207376), (4985, 196352), (6136, 159520), (7552, 129610), (7670, 127616), (7976, 122720), (8320, 117646), (9440, 103688), (9970, 98176), (12272, 79760), (12961, 75520), (15104, 64805), (15340, 63808), (15952, 61360), (16640, 58823), (18880, 51844), (19940, 49088), (24544, 39880), (25922, 37760), (30680, 31904)]