21085388625

素因数分解:

$3^1\times 5^3\times 7^1\times {\mathrm{43}}^1\times {\mathrm{367}}^1\times {\mathrm{509}}^1$

素因数の和:944

約数の個数: 128

約数和(自身を含む): 41223536640

約数和(自身を除く): 20138148015

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 43, 75, 105, 125, 129, 175, 215, 301, 367, 375, 509, 525, 645, 875, 903, 1075, 1101, 1505, 1527, 1835, 2545, 2569, 2625, 3225, 3563, 4515, 5375, 5505, 7525, 7635, 7707, 9175, 10689, 12725, 12845, 15781, 16125, 17815, 21887, 22575, 27525, 37625, 38175, 38535, 45875, 47343, 53445, 63625, 64225, 65661, 78905, 89075, 109435, 110467, 112875, 137625, 153209, 186803, 190875, 192675, 236715, 267225, 321125, 328305, 331401, 394525, 445375, 459627, 547175, 552335, 560409, 766045, 934015, 963375, 1183575, 1307621, 1336125, 1641525, 1657005, 1972625, 2298135, 2735875, 2761675, 2802045, 3830225, 3922863, 4670075, 5917875, 6538105, 8032529, 8207625, 8285025, 11490675, 13808375, 14010225, 19151125, 19614315, 23350375, 24097587, 32690525, 40162645, 41425125, 56227703, 57453375, 70051125, 98071575, 120487935, 163452625, 168683109, 200813225, 281138515, 490357875, 602439675, 843415545, 1004066125, 1405692575, 3012198375, 4217077725, 7028462875, 21085388625]

約数ペア:

[(1, 21085388625), (3, 7028462875), (5, 4217077725), (7, 3012198375), (15, 1405692575), (21, 1004066125), (25, 843415545), (35, 602439675), (43, 490357875), (75, 281138515), (105, 200813225), (125, 168683109), (129, 163452625), (175, 120487935), (215, 98071575), (301, 70051125), (367, 57453375), (375, 56227703), (509, 41425125), (525, 40162645), (645, 32690525), (875, 24097587), (903, 23350375), (1075, 19614315), (1101, 19151125), (1505, 14010225), (1527, 13808375), (1835, 11490675), (2545, 8285025), (2569, 8207625), (2625, 8032529), (3225, 6538105), (3563, 5917875), (4515, 4670075), (5375, 3922863), (5505, 3830225), (7525, 2802045), (7635, 2761675), (7707, 2735875), (9175, 2298135), (10689, 1972625), (12725, 1657005), (12845, 1641525), (15781, 1336125), (16125, 1307621), (17815, 1183575), (21887, 963375), (22575, 934015), (27525, 766045), (37625, 560409), (38175, 552335), (38535, 547175), (45875, 459627), (47343, 445375), (53445, 394525), (63625, 331401), (64225, 328305), (65661, 321125), (78905, 267225), (89075, 236715), (109435, 192675), (110467, 190875), (112875, 186803), (137625, 153209)]