81466450

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{311}}^1$

素因数の和:380

約数の個数: 72

約数和(自身を含む): 169917696

約数和(自身を除く): 88451246

約数列:

[1, 2, 5, 10, 13, 25, 26, 31, 50, 62, 65, 130, 155, 169, 310, 311, 325, 338, 403, 622, 650, 775, 806, 845, 1550, 1555, 1690, 2015, 3110, 4030, 4043, 4225, 5239, 7775, 8086, 8450, 9641, 10075, 10478, 15550, 19282, 20150, 20215, 26195, 40430, 48205, 52390, 52559, 96410, 101075, 105118, 125333, 130975, 202150, 241025, 250666, 261950, 262795, 482050, 525590, 626665, 1253330, 1313975, 1629329, 2627950, 3133325, 3258658, 6266650, 8146645, 16293290, 40733225, 81466450]

約数ペア:

[(1, 81466450), (2, 40733225), (5, 16293290), (10, 8146645), (13, 6266650), (25, 3258658), (26, 3133325), (31, 2627950), (50, 1629329), (62, 1313975), (65, 1253330), (130, 626665), (155, 525590), (169, 482050), (310, 262795), (311, 261950), (325, 250666), (338, 241025), (403, 202150), (622, 130975), (650, 125333), (775, 105118), (806, 101075), (845, 96410), (1550, 52559), (1555, 52390), (1690, 48205), (2015, 40430), (3110, 26195), (4030, 20215), (4043, 20150), (4225, 19282), (5239, 15550), (7775, 10478), (8086, 10075), (8450, 9641)]