19685456

素因数分解:

$2^4\times 7^3\times {\mathrm{17}}^1\times {\mathrm{211}}^1$

素因数の和:257

約数の個数: 80

約数和(自身を含む): 47318400

約数和(自身を除く): 27632944

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 34, 49, 56, 68, 98, 112, 119, 136, 196, 211, 238, 272, 343, 392, 422, 476, 686, 784, 833, 844, 952, 1372, 1477, 1666, 1688, 1904, 2744, 2954, 3332, 3376, 3587, 5488, 5831, 5908, 6664, 7174, 10339, 11662, 11816, 13328, 14348, 20678, 23324, 23632, 25109, 28696, 41356, 46648, 50218, 57392, 72373, 82712, 93296, 100436, 144746, 165424, 175763, 200872, 289492, 351526, 401744, 578984, 703052, 1157968, 1230341, 1406104, 2460682, 2812208, 4921364, 9842728, 19685456]

約数ペア:

[(1, 19685456), (2, 9842728), (4, 4921364), (7, 2812208), (8, 2460682), (14, 1406104), (16, 1230341), (17, 1157968), (28, 703052), (34, 578984), (49, 401744), (56, 351526), (68, 289492), (98, 200872), (112, 175763), (119, 165424), (136, 144746), (196, 100436), (211, 93296), (238, 82712), (272, 72373), (343, 57392), (392, 50218), (422, 46648), (476, 41356), (686, 28696), (784, 25109), (833, 23632), (844, 23324), (952, 20678), (1372, 14348), (1477, 13328), (1666, 11816), (1688, 11662), (1904, 10339), (2744, 7174), (2954, 6664), (3332, 5908), (3376, 5831), (3587, 5488)]