19991320

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29399}}^1$

素因数の和:29427

約数の個数: 32

約数和(自身を含む): 47628000

約数和(自身を除く): 27636680

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 29399, 58798, 117596, 146995, 235192, 293990, 499783, 587980, 999566, 1175960, 1999132, 2498915, 3998264, 4997830, 9995660, 19991320]

約数ペア:

[(1, 19991320), (2, 9995660), (4, 4997830), (5, 3998264), (8, 2498915), (10, 1999132), (17, 1175960), (20, 999566), (34, 587980), (40, 499783), (68, 293990), (85, 235192), (136, 146995), (170, 117596), (340, 58798), (680, 29399)]