81213860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{44623}}^1$

素因数の和:44652

約数の個数: 48

約数和(自身を含む): 209911296

約数和(自身を除く): 128697436

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 44623, 89246, 178492, 223115, 312361, 446230, 580099, 624722, 892460, 1160198, 1249444, 1561805, 2320396, 2900495, 3123610, 4060693, 5800990, 6247220, 8121386, 11601980, 16242772, 20303465, 40606930, 81213860]

約数ペア:

[(1, 81213860), (2, 40606930), (4, 20303465), (5, 16242772), (7, 11601980), (10, 8121386), (13, 6247220), (14, 5800990), (20, 4060693), (26, 3123610), (28, 2900495), (35, 2320396), (52, 1561805), (65, 1249444), (70, 1160198), (91, 892460), (130, 624722), (140, 580099), (182, 446230), (260, 312361), (364, 223115), (455, 178492), (910, 89246), (1820, 44623)]