21779415

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{1213}}^1$

素因数の和:1253

約数の個数: 64

約数和(自身を含む): 46617600

約数和(自身を除く): 24838185

約数列:

[1, 3, 5, 7, 9, 15, 19, 21, 27, 35, 45, 57, 63, 95, 105, 133, 135, 171, 189, 285, 315, 399, 513, 665, 855, 945, 1197, 1213, 1995, 2565, 3591, 3639, 5985, 6065, 8491, 10917, 17955, 18195, 23047, 25473, 32751, 42455, 54585, 69141, 76419, 115235, 127365, 161329, 163755, 207423, 229257, 345705, 382095, 483987, 622269, 806645, 1037115, 1146285, 1451961, 2419935, 3111345, 4355883, 7259805, 21779415]

約数ペア:

[(1, 21779415), (3, 7259805), (5, 4355883), (7, 3111345), (9, 2419935), (15, 1451961), (19, 1146285), (21, 1037115), (27, 806645), (35, 622269), (45, 483987), (57, 382095), (63, 345705), (95, 229257), (105, 207423), (133, 163755), (135, 161329), (171, 127365), (189, 115235), (285, 76419), (315, 69141), (399, 54585), (513, 42455), (665, 32751), (855, 25473), (945, 23047), (1197, 18195), (1213, 17955), (1995, 10917), (2565, 8491), (3591, 6065), (3639, 5985)]