18980415

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{577}}^1$

素因数の和:648

約数の個数: 48

約数和(自身を含む): 35706528

約数和(自身を除く): 16726113

約数列:

[1, 3, 5, 9, 15, 17, 43, 45, 51, 85, 129, 153, 215, 255, 387, 577, 645, 731, 765, 1731, 1935, 2193, 2885, 3655, 5193, 6579, 8655, 9809, 10965, 24811, 25965, 29427, 32895, 49045, 74433, 88281, 124055, 147135, 223299, 372165, 421787, 441405, 1116495, 1265361, 2108935, 3796083, 6326805, 18980415]

約数ペア:

[(1, 18980415), (3, 6326805), (5, 3796083), (9, 2108935), (15, 1265361), (17, 1116495), (43, 441405), (45, 421787), (51, 372165), (85, 223299), (129, 147135), (153, 124055), (215, 88281), (255, 74433), (387, 49045), (577, 32895), (645, 29427), (731, 25965), (765, 24811), (1731, 10965), (1935, 9809), (2193, 8655), (2885, 6579), (3655, 5193)]