81419425

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1$

素因数の和:202

約数の個数: 48

約数和(自身を含む): 111957120

約数和(自身を除く): 30537695

約数列:

[1, 5, 23, 25, 37, 43, 89, 115, 185, 215, 445, 575, 851, 925, 989, 1075, 1591, 2047, 2225, 3293, 3827, 4255, 4945, 7955, 10235, 16465, 19135, 21275, 24725, 36593, 39775, 51175, 75739, 82325, 88021, 95675, 141599, 182965, 378695, 440105, 707995, 914825, 1893475, 2200525, 3256777, 3539975, 16283885, 81419425]

約数ペア:

[(1, 81419425), (5, 16283885), (23, 3539975), (25, 3256777), (37, 2200525), (43, 1893475), (89, 914825), (115, 707995), (185, 440105), (215, 378695), (445, 182965), (575, 141599), (851, 95675), (925, 88021), (989, 82325), (1075, 75739), (1591, 51175), (2047, 39775), (2225, 36593), (3293, 24725), (3827, 21275), (4255, 19135), (4945, 16465), (7955, 10235)]