21706365

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{3701}}^1$

素因数の和:3749

約数の個数: 32

約数和(自身を含む): 38382336

約数和(自身を除く): 16675971

約数列:

[1, 3, 5, 15, 17, 23, 51, 69, 85, 115, 255, 345, 391, 1173, 1955, 3701, 5865, 11103, 18505, 55515, 62917, 85123, 188751, 255369, 314585, 425615, 943755, 1276845, 1447091, 4341273, 7235455, 21706365]

約数ペア:

[(1, 21706365), (3, 7235455), (5, 4341273), (15, 1447091), (17, 1276845), (23, 943755), (51, 425615), (69, 314585), (85, 255369), (115, 188751), (255, 85123), (345, 62917), (391, 55515), (1173, 18505), (1955, 11103), (3701, 5865)]