21362175

素因数分解:

$3^2\times 5^2\times {\mathrm{19}}^2\times {\mathrm{263}}^1$

素因数の和:317

約数の個数: 54

約数和(自身を含む): 40535352

約数和(自身を除く): 19173177

約数列:

[1, 3, 5, 9, 15, 19, 25, 45, 57, 75, 95, 171, 225, 263, 285, 361, 475, 789, 855, 1083, 1315, 1425, 1805, 2367, 3249, 3945, 4275, 4997, 5415, 6575, 9025, 11835, 14991, 16245, 19725, 24985, 27075, 44973, 59175, 74955, 81225, 94943, 124925, 224865, 284829, 374775, 474715, 854487, 1124325, 1424145, 2373575, 4272435, 7120725, 21362175]

約数ペア:

[(1, 21362175), (3, 7120725), (5, 4272435), (9, 2373575), (15, 1424145), (19, 1124325), (25, 854487), (45, 474715), (57, 374775), (75, 284829), (95, 224865), (171, 124925), (225, 94943), (263, 81225), (285, 74955), (361, 59175), (475, 44973), (789, 27075), (855, 24985), (1083, 19725), (1315, 16245), (1425, 14991), (1805, 11835), (2367, 9025), (3249, 6575), (3945, 5415), (4275, 4997)]