205967720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{389}}^1$

素因数の和:499

約数の個数: 128

約数和(自身を含む): 557107200

約数和(自身を除く): 351139480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 56, 61, 62, 70, 122, 124, 140, 155, 217, 244, 248, 280, 305, 310, 389, 427, 434, 488, 610, 620, 778, 854, 868, 1085, 1220, 1240, 1556, 1708, 1736, 1891, 1945, 2135, 2170, 2440, 2723, 3112, 3416, 3782, 3890, 4270, 4340, 5446, 7564, 7780, 8540, 8680, 9455, 10892, 12059, 13237, 13615, 15128, 15560, 17080, 18910, 21784, 23729, 24118, 26474, 27230, 37820, 47458, 48236, 52948, 54460, 60295, 66185, 75640, 84413, 94916, 96472, 105896, 108920, 118645, 120590, 132370, 166103, 168826, 189832, 237290, 241180, 264740, 332206, 337652, 422065, 474580, 482360, 529480, 664412, 675304, 735599, 830515, 844130, 949160, 1328824, 1471198, 1661030, 1688260, 2942396, 3322060, 3376520, 3677995, 5149193, 5884792, 6644120, 7355990, 10298386, 14711980, 20596772, 25745965, 29423960, 41193544, 51491930, 102983860, 205967720]

約数ペア:

[(1, 205967720), (2, 102983860), (4, 51491930), (5, 41193544), (7, 29423960), (8, 25745965), (10, 20596772), (14, 14711980), (20, 10298386), (28, 7355990), (31, 6644120), (35, 5884792), (40, 5149193), (56, 3677995), (61, 3376520), (62, 3322060), (70, 2942396), (122, 1688260), (124, 1661030), (140, 1471198), (155, 1328824), (217, 949160), (244, 844130), (248, 830515), (280, 735599), (305, 675304), (310, 664412), (389, 529480), (427, 482360), (434, 474580), (488, 422065), (610, 337652), (620, 332206), (778, 264740), (854, 241180), (868, 237290), (1085, 189832), (1220, 168826), (1240, 166103), (1556, 132370), (1708, 120590), (1736, 118645), (1891, 108920), (1945, 105896), (2135, 96472), (2170, 94916), (2440, 84413), (2723, 75640), (3112, 66185), (3416, 60295), (3782, 54460), (3890, 52948), (4270, 48236), (4340, 47458), (5446, 37820), (7564, 27230), (7780, 26474), (8540, 24118), (8680, 23729), (9455, 21784), (10892, 18910), (12059, 17080), (13237, 15560), (13615, 15128)]