20355320

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{6971}}^1$

素因数の和:7055

約数の個数: 32

約数和(自身を含む): 46433520

約数和(自身を除く): 26078200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 6971, 13942, 27884, 34855, 55768, 69710, 139420, 278840, 508883, 1017766, 2035532, 2544415, 4071064, 5088830, 10177660, 20355320]

約数ペア:

[(1, 20355320), (2, 10177660), (4, 5088830), (5, 4071064), (8, 2544415), (10, 2035532), (20, 1017766), (40, 508883), (73, 278840), (146, 139420), (292, 69710), (365, 55768), (584, 34855), (730, 27884), (1460, 13942), (2920, 6971)]