20670790

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{347}}^1$

素因数の和:421

約数の個数: 64

約数和(自身を含む): 45702144

約数和(自身を除く): 25031354

約数列:

[1, 2, 5, 7, 10, 14, 23, 35, 37, 46, 70, 74, 115, 161, 185, 230, 259, 322, 347, 370, 518, 694, 805, 851, 1295, 1610, 1702, 1735, 2429, 2590, 3470, 4255, 4858, 5957, 7981, 8510, 11914, 12145, 12839, 15962, 24290, 25678, 29785, 39905, 55867, 59570, 64195, 79810, 89873, 111734, 128390, 179746, 279335, 295297, 449365, 558670, 590594, 898730, 1476485, 2067079, 2952970, 4134158, 10335395, 20670790]

約数ペア:

[(1, 20670790), (2, 10335395), (5, 4134158), (7, 2952970), (10, 2067079), (14, 1476485), (23, 898730), (35, 590594), (37, 558670), (46, 449365), (70, 295297), (74, 279335), (115, 179746), (161, 128390), (185, 111734), (230, 89873), (259, 79810), (322, 64195), (347, 59570), (370, 55867), (518, 39905), (694, 29785), (805, 25678), (851, 24290), (1295, 15962), (1610, 12839), (1702, 12145), (1735, 11914), (2429, 8510), (2590, 7981), (3470, 5957), (4255, 4858)]