21035565

素因数分解:

$3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{139}}^1$

素因数の和:231

約数の個数: 64

約数和(自身を含む): 40320000

約数和(自身を除く): 19284435

約数列:

[1, 3, 5, 9, 15, 19, 27, 45, 57, 59, 95, 135, 139, 171, 177, 285, 295, 417, 513, 531, 695, 855, 885, 1121, 1251, 1593, 2085, 2565, 2641, 2655, 3363, 3753, 5605, 6255, 7923, 7965, 8201, 10089, 13205, 16815, 18765, 23769, 24603, 30267, 39615, 41005, 50445, 71307, 73809, 118845, 123015, 151335, 155819, 221427, 356535, 369045, 467457, 779095, 1107135, 1402371, 2337285, 4207113, 7011855, 21035565]

約数ペア:

[(1, 21035565), (3, 7011855), (5, 4207113), (9, 2337285), (15, 1402371), (19, 1107135), (27, 779095), (45, 467457), (57, 369045), (59, 356535), (95, 221427), (135, 155819), (139, 151335), (171, 123015), (177, 118845), (285, 73809), (295, 71307), (417, 50445), (513, 41005), (531, 39615), (695, 30267), (855, 24603), (885, 23769), (1121, 18765), (1251, 16815), (1593, 13205), (2085, 10089), (2565, 8201), (2641, 7965), (2655, 7923), (3363, 6255), (3753, 5605)]