645990190

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{163}}^1\times {\mathrm{17231}}^1$

素因数の和:17424

約数の個数: 32

約数和(自身を含む): 1220852736

約数和(自身を除く): 574862546

約数列:

[1, 2, 5, 10, 23, 46, 115, 163, 230, 326, 815, 1630, 3749, 7498, 17231, 18745, 34462, 37490, 86155, 172310, 396313, 792626, 1981565, 2808653, 3963130, 5617306, 14043265, 28086530, 64599019, 129198038, 322995095, 645990190]

約数ペア:

[(1, 645990190), (2, 322995095), (5, 129198038), (10, 64599019), (23, 28086530), (46, 14043265), (115, 5617306), (163, 3963130), (230, 2808653), (326, 1981565), (815, 792626), (1630, 396313), (3749, 172310), (7498, 86155), (17231, 37490), (18745, 34462)]