21308960

素因数分解:

$2^5\times 5^1\times {\mathrm{97}}^1\times {\mathrm{1373}}^1$

素因数の和:1485

約数の個数: 48

約数和(自身を含む): 50898456

約数和(自身を除く): 29589496

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 97, 160, 194, 388, 485, 776, 970, 1373, 1552, 1940, 2746, 3104, 3880, 5492, 6865, 7760, 10984, 13730, 15520, 21968, 27460, 43936, 54920, 109840, 133181, 219680, 266362, 532724, 665905, 1065448, 1331810, 2130896, 2663620, 4261792, 5327240, 10654480, 21308960]

約数ペア:

[(1, 21308960), (2, 10654480), (4, 5327240), (5, 4261792), (8, 2663620), (10, 2130896), (16, 1331810), (20, 1065448), (32, 665905), (40, 532724), (80, 266362), (97, 219680), (160, 133181), (194, 109840), (388, 54920), (485, 43936), (776, 27460), (970, 21968), (1373, 15520), (1552, 13730), (1940, 10984), (2746, 7760), (3104, 6865), (3880, 5492)]