20611220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{173}}^1$

素因数の和:249

約数の個数: 96

約数和(自身を含む): 53319168

約数和(自身を除く): 32707948

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 37, 46, 70, 74, 92, 115, 140, 148, 161, 173, 185, 230, 259, 322, 346, 370, 460, 518, 644, 692, 740, 805, 851, 865, 1036, 1211, 1295, 1610, 1702, 1730, 2422, 2590, 3220, 3404, 3460, 3979, 4255, 4844, 5180, 5957, 6055, 6401, 7958, 8510, 11914, 12110, 12802, 15916, 17020, 19895, 23828, 24220, 25604, 27853, 29785, 32005, 39790, 44807, 55706, 59570, 64010, 79580, 89614, 111412, 119140, 128020, 139265, 147223, 179228, 224035, 278530, 294446, 448070, 557060, 588892, 736115, 896140, 1030561, 1472230, 2061122, 2944460, 4122244, 5152805, 10305610, 20611220]

約数ペア:

[(1, 20611220), (2, 10305610), (4, 5152805), (5, 4122244), (7, 2944460), (10, 2061122), (14, 1472230), (20, 1030561), (23, 896140), (28, 736115), (35, 588892), (37, 557060), (46, 448070), (70, 294446), (74, 278530), (92, 224035), (115, 179228), (140, 147223), (148, 139265), (161, 128020), (173, 119140), (185, 111412), (230, 89614), (259, 79580), (322, 64010), (346, 59570), (370, 55706), (460, 44807), (518, 39790), (644, 32005), (692, 29785), (740, 27853), (805, 25604), (851, 24220), (865, 23828), (1036, 19895), (1211, 17020), (1295, 15916), (1610, 12802), (1702, 12110), (1730, 11914), (2422, 8510), (2590, 7958), (3220, 6401), (3404, 6055), (3460, 5957), (3979, 5180), (4255, 4844)]