19987240900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{139}}^1\times {\mathrm{3533}}^1$

素因数の和:3734

約数の個数: 144

約数和(自身を含む): 48957491520

約数和(自身を除く): 28970250620

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 37, 44, 50, 55, 74, 100, 110, 139, 148, 185, 220, 275, 278, 370, 407, 550, 556, 695, 740, 814, 925, 1100, 1390, 1529, 1628, 1850, 2035, 2780, 3058, 3475, 3533, 3700, 4070, 5143, 6116, 6950, 7066, 7645, 8140, 10175, 10286, 13900, 14132, 15290, 17665, 20350, 20572, 25715, 30580, 35330, 38225, 38863, 40700, 51430, 56573, 70660, 76450, 77726, 88325, 102860, 113146, 128575, 130721, 152900, 155452, 176650, 194315, 226292, 257150, 261442, 282865, 353300, 388630, 491087, 514300, 522884, 565730, 653605, 777260, 971575, 982174, 1131460, 1307210, 1414325, 1437931, 1943150, 1964348, 2455435, 2614420, 2828650, 2875862, 3268025, 3886300, 4910870, 5401957, 5657300, 5751724, 6536050, 7189655, 9821740, 10803914, 12277175, 13072100, 14379310, 18170219, 21607828, 24554350, 27009785, 28758620, 35948275, 36340438, 49108700, 54019570, 71896550, 72680876, 90851095, 108039140, 135048925, 143793100, 181702190, 199872409, 270097850, 363404380, 399744818, 454255475, 540195700, 799489636, 908510950, 999362045, 1817021900, 1998724090, 3997448180, 4996810225, 9993620450, 19987240900]

約数ペア:

[(1, 19987240900), (2, 9993620450), (4, 4996810225), (5, 3997448180), (10, 1998724090), (11, 1817021900), (20, 999362045), (22, 908510950), (25, 799489636), (37, 540195700), (44, 454255475), (50, 399744818), (55, 363404380), (74, 270097850), (100, 199872409), (110, 181702190), (139, 143793100), (148, 135048925), (185, 108039140), (220, 90851095), (275, 72680876), (278, 71896550), (370, 54019570), (407, 49108700), (550, 36340438), (556, 35948275), (695, 28758620), (740, 27009785), (814, 24554350), (925, 21607828), (1100, 18170219), (1390, 14379310), (1529, 13072100), (1628, 12277175), (1850, 10803914), (2035, 9821740), (2780, 7189655), (3058, 6536050), (3475, 5751724), (3533, 5657300), (3700, 5401957), (4070, 4910870), (5143, 3886300), (6116, 3268025), (6950, 2875862), (7066, 2828650), (7645, 2614420), (8140, 2455435), (10175, 1964348), (10286, 1943150), (13900, 1437931), (14132, 1414325), (15290, 1307210), (17665, 1131460), (20350, 982174), (20572, 971575), (25715, 777260), (30580, 653605), (35330, 565730), (38225, 522884), (38863, 514300), (40700, 491087), (51430, 388630), (56573, 353300), (70660, 282865), (76450, 261442), (77726, 257150), (88325, 226292), (102860, 194315), (113146, 176650), (128575, 155452), (130721, 152900)]