21579345

素因数分解:

$3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{179}}^1$

素因数の和:259

約数の個数: 64

約数和(自身を含む): 41472000

約数和(自身を除く): 19892655

約数列:

[1, 3, 5, 9, 15, 19, 27, 45, 47, 57, 95, 135, 141, 171, 179, 235, 285, 423, 513, 537, 705, 855, 893, 895, 1269, 1611, 2115, 2565, 2679, 2685, 3401, 4465, 4833, 6345, 8037, 8055, 8413, 10203, 13395, 17005, 24111, 24165, 25239, 30609, 40185, 42065, 51015, 75717, 91827, 120555, 126195, 153045, 159847, 227151, 378585, 459135, 479541, 799235, 1135755, 1438623, 2397705, 4315869, 7193115, 21579345]

約数ペア:

[(1, 21579345), (3, 7193115), (5, 4315869), (9, 2397705), (15, 1438623), (19, 1135755), (27, 799235), (45, 479541), (47, 459135), (57, 378585), (95, 227151), (135, 159847), (141, 153045), (171, 126195), (179, 120555), (235, 91827), (285, 75717), (423, 51015), (513, 42065), (537, 40185), (705, 30609), (855, 25239), (893, 24165), (895, 24111), (1269, 17005), (1611, 13395), (2115, 10203), (2565, 8413), (2679, 8055), (2685, 8037), (3401, 6345), (4465, 4833)]