21623805

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{3613}}^1$

素因数の和:3650

約数の個数: 48

約数和(自身を含む): 45102720

約数和(自身を除く): 23478915

約数列:

[1, 3, 5, 7, 9, 15, 19, 21, 35, 45, 57, 63, 95, 105, 133, 171, 285, 315, 399, 665, 855, 1197, 1995, 3613, 5985, 10839, 18065, 25291, 32517, 54195, 68647, 75873, 126455, 162585, 205941, 227619, 343235, 379365, 480529, 617823, 1029705, 1138095, 1441587, 2402645, 3089115, 4324761, 7207935, 21623805]

約数ペア:

[(1, 21623805), (3, 7207935), (5, 4324761), (7, 3089115), (9, 2402645), (15, 1441587), (19, 1138095), (21, 1029705), (35, 617823), (45, 480529), (57, 379365), (63, 343235), (95, 227619), (105, 205941), (133, 162585), (171, 126455), (285, 75873), (315, 68647), (399, 54195), (665, 32517), (855, 25291), (1197, 18065), (1995, 10839), (3613, 5985)]