21102255

素因数分解:

$3^3\times 5^1\times {\mathrm{19}}^2\times {\mathrm{433}}^1$

素因数の和:485

約数の個数: 48

約数和(自身を含む): 39684960

約数和(自身を除く): 18582705

約数列:

[1, 3, 5, 9, 15, 19, 27, 45, 57, 95, 135, 171, 285, 361, 433, 513, 855, 1083, 1299, 1805, 2165, 2565, 3249, 3897, 5415, 6495, 8227, 9747, 11691, 16245, 19485, 24681, 41135, 48735, 58455, 74043, 123405, 156313, 222129, 370215, 468939, 781565, 1110645, 1406817, 2344695, 4220451, 7034085, 21102255]

約数ペア:

[(1, 21102255), (3, 7034085), (5, 4220451), (9, 2344695), (15, 1406817), (19, 1110645), (27, 781565), (45, 468939), (57, 370215), (95, 222129), (135, 156313), (171, 123405), (285, 74043), (361, 58455), (433, 48735), (513, 41135), (855, 24681), (1083, 19485), (1299, 16245), (1805, 11691), (2165, 9747), (2565, 8227), (3249, 6495), (3897, 5415)]