19641885

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{23}}^1\times {\mathrm{197}}^1$

素因数の和:262

約数の個数: 48

約数和(自身を含む): 35012736

約数和(自身を除く): 15370851

約数列:

[1, 3, 5, 15, 17, 23, 51, 69, 85, 115, 197, 255, 289, 345, 391, 591, 867, 985, 1173, 1445, 1955, 2955, 3349, 4335, 4531, 5865, 6647, 10047, 13593, 16745, 19941, 22655, 33235, 50235, 56933, 67965, 77027, 99705, 170799, 231081, 284665, 385135, 853995, 1155405, 1309459, 3928377, 6547295, 19641885]

約数ペア:

[(1, 19641885), (3, 6547295), (5, 3928377), (15, 1309459), (17, 1155405), (23, 853995), (51, 385135), (69, 284665), (85, 231081), (115, 170799), (197, 99705), (255, 77027), (289, 67965), (345, 56933), (391, 50235), (591, 33235), (867, 22655), (985, 19941), (1173, 16745), (1445, 13593), (1955, 10047), (2955, 6647), (3349, 5865), (4335, 4531)]