81975816

素因数分解:

$2^3\times 3^2\times {\mathrm{13}}^2\times {\mathrm{6737}}^1$

素因数の和:6775

約数の個数: 72

約数和(自身を含む): 240445530

約数和(自身を除く): 158469714

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 18, 24, 26, 36, 39, 52, 72, 78, 104, 117, 156, 169, 234, 312, 338, 468, 507, 676, 936, 1014, 1352, 1521, 2028, 3042, 4056, 6084, 6737, 12168, 13474, 20211, 26948, 40422, 53896, 60633, 80844, 87581, 121266, 161688, 175162, 242532, 262743, 350324, 485064, 525486, 700648, 788229, 1050972, 1138553, 1576458, 2101944, 2277106, 3152916, 3415659, 4554212, 6305832, 6831318, 9108424, 10246977, 13662636, 20493954, 27325272, 40987908, 81975816]

約数ペア:

[(1, 81975816), (2, 40987908), (3, 27325272), (4, 20493954), (6, 13662636), (8, 10246977), (9, 9108424), (12, 6831318), (13, 6305832), (18, 4554212), (24, 3415659), (26, 3152916), (36, 2277106), (39, 2101944), (52, 1576458), (72, 1138553), (78, 1050972), (104, 788229), (117, 700648), (156, 525486), (169, 485064), (234, 350324), (312, 262743), (338, 242532), (468, 175162), (507, 161688), (676, 121266), (936, 87581), (1014, 80844), (1352, 60633), (1521, 53896), (2028, 40422), (3042, 26948), (4056, 20211), (6084, 13474), (6737, 12168)]