21740025

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^3\times {\mathrm{59}}^1$

素因数の和:123

約数の個数: 48

約数和(自身を含む): 38836800

約数和(自身を除く): 17096775

約数列:

[1, 3, 5, 15, 17, 25, 51, 59, 75, 85, 177, 255, 289, 295, 425, 867, 885, 1003, 1275, 1445, 1475, 3009, 4335, 4425, 4913, 5015, 7225, 14739, 15045, 17051, 21675, 24565, 25075, 51153, 73695, 75225, 85255, 122825, 255765, 289867, 368475, 426275, 869601, 1278825, 1449335, 4348005, 7246675, 21740025]

約数ペア:

[(1, 21740025), (3, 7246675), (5, 4348005), (15, 1449335), (17, 1278825), (25, 869601), (51, 426275), (59, 368475), (75, 289867), (85, 255765), (177, 122825), (255, 85255), (289, 75225), (295, 73695), (425, 51153), (867, 25075), (885, 24565), (1003, 21675), (1275, 17051), (1445, 15045), (1475, 14739), (3009, 7225), (4335, 5015), (4425, 4913)]