220198720

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{499}}^1$

素因数の和:720

約数の個数: 112

約数和(自身を含む): 603504000

約数和(自身を除く): 383305280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 140, 160, 197, 224, 280, 320, 394, 448, 499, 560, 788, 985, 998, 1120, 1379, 1576, 1970, 1996, 2240, 2495, 2758, 3152, 3493, 3940, 3992, 4990, 5516, 6304, 6895, 6986, 7880, 7984, 9980, 11032, 12608, 13790, 13972, 15760, 15968, 17465, 19960, 22064, 27580, 27944, 31520, 31936, 34930, 39920, 44128, 55160, 55888, 63040, 69860, 79840, 88256, 98303, 110320, 111776, 139720, 159680, 196606, 220640, 223552, 279440, 393212, 441280, 491515, 558880, 688121, 786424, 983030, 1117760, 1376242, 1572848, 1966060, 2752484, 3145696, 3440605, 3932120, 5504968, 6291392, 6881210, 7864240, 11009936, 13762420, 15728480, 22019872, 27524840, 31456960, 44039744, 55049680, 110099360, 220198720]

約数ペア:

[(1, 220198720), (2, 110099360), (4, 55049680), (5, 44039744), (7, 31456960), (8, 27524840), (10, 22019872), (14, 15728480), (16, 13762420), (20, 11009936), (28, 7864240), (32, 6881210), (35, 6291392), (40, 5504968), (56, 3932120), (64, 3440605), (70, 3145696), (80, 2752484), (112, 1966060), (140, 1572848), (160, 1376242), (197, 1117760), (224, 983030), (280, 786424), (320, 688121), (394, 558880), (448, 491515), (499, 441280), (560, 393212), (788, 279440), (985, 223552), (998, 220640), (1120, 196606), (1379, 159680), (1576, 139720), (1970, 111776), (1996, 110320), (2240, 98303), (2495, 88256), (2758, 79840), (3152, 69860), (3493, 63040), (3940, 55888), (3992, 55160), (4990, 44128), (5516, 39920), (6304, 34930), (6895, 31936), (6986, 31520), (7880, 27944), (7984, 27580), (9980, 22064), (11032, 19960), (12608, 17465), (13790, 15968), (13972, 15760)]