20620215

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{541}}^1$

素因数の和:581

約数の個数: 72

約数和(自身を含む): 44981664

約数和(自身を除く): 24361449

約数列:

[1, 3, 5, 7, 9, 11, 15, 21, 33, 35, 45, 55, 63, 77, 99, 105, 121, 165, 231, 315, 363, 385, 495, 541, 605, 693, 847, 1089, 1155, 1623, 1815, 2541, 2705, 3465, 3787, 4235, 4869, 5445, 5951, 7623, 8115, 11361, 12705, 17853, 18935, 24345, 29755, 34083, 38115, 41657, 53559, 56805, 65461, 89265, 124971, 170415, 196383, 208285, 267795, 327305, 374913, 458227, 589149, 624855, 981915, 1374681, 1874565, 2291135, 2945745, 4124043, 6873405, 20620215]

約数ペア:

[(1, 20620215), (3, 6873405), (5, 4124043), (7, 2945745), (9, 2291135), (11, 1874565), (15, 1374681), (21, 981915), (33, 624855), (35, 589149), (45, 458227), (55, 374913), (63, 327305), (77, 267795), (99, 208285), (105, 196383), (121, 170415), (165, 124971), (231, 89265), (315, 65461), (363, 56805), (385, 53559), (495, 41657), (541, 38115), (605, 34083), (693, 29755), (847, 24345), (1089, 18935), (1155, 17853), (1623, 12705), (1815, 11361), (2541, 8115), (2705, 7623), (3465, 5951), (3787, 5445), (4235, 4869)]