20784784761

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{461}}^1\times {\mathrm{911}}^1$

素因数の和:1444

約数の個数: 80

約数和(自身を含む): 34260323328

約数和(自身を除く): 13475538567

約数列:

[1, 3, 9, 13, 27, 39, 47, 81, 117, 141, 351, 423, 461, 611, 911, 1053, 1269, 1383, 1833, 2733, 3807, 4149, 5499, 5993, 8199, 11843, 12447, 16497, 17979, 21667, 24597, 35529, 37341, 42817, 49491, 53937, 65001, 73791, 106587, 128451, 161811, 195003, 281671, 319761, 385353, 419971, 485433, 556621, 585009, 845013, 959283, 1156059, 1259913, 1669863, 1755027, 2535039, 3468177, 3779739, 5009589, 5459623, 7605117, 11339217, 15028767, 16378869, 19738637, 22815351, 34017651, 45086301, 49136607, 59215911, 147409821, 177647733, 256602281, 442229463, 532943199, 769806843, 1598829597, 2309420529, 6928261587, 20784784761]

約数ペア:

[(1, 20784784761), (3, 6928261587), (9, 2309420529), (13, 1598829597), (27, 769806843), (39, 532943199), (47, 442229463), (81, 256602281), (117, 177647733), (141, 147409821), (351, 59215911), (423, 49136607), (461, 45086301), (611, 34017651), (911, 22815351), (1053, 19738637), (1269, 16378869), (1383, 15028767), (1833, 11339217), (2733, 7605117), (3807, 5459623), (4149, 5009589), (5499, 3779739), (5993, 3468177), (8199, 2535039), (11843, 1755027), (12447, 1669863), (16497, 1259913), (17979, 1156059), (21667, 959283), (24597, 845013), (35529, 585009), (37341, 556621), (42817, 485433), (49491, 419971), (53937, 385353), (65001, 319761), (73791, 281671), (106587, 195003), (128451, 161811)]