21440565

素因数分解:

$3^3\times 5^1\times {\mathrm{241}}^1\times {\mathrm{659}}^1$

素因数の和:914

約数の個数: 32

約数和(自身を含む): 38332800

約数和(自身を除く): 16892235

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 241, 659, 723, 1205, 1977, 2169, 3295, 3615, 5931, 6507, 9885, 10845, 17793, 29655, 32535, 88965, 158819, 476457, 794095, 1429371, 2382285, 4288113, 7146855, 21440565]

約数ペア:

[(1, 21440565), (3, 7146855), (5, 4288113), (9, 2382285), (15, 1429371), (27, 794095), (45, 476457), (135, 158819), (241, 88965), (659, 32535), (723, 29655), (1205, 17793), (1977, 10845), (2169, 9885), (3295, 6507), (3615, 5931)]