81329020

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{251}}^1\times {\mathrm{953}}^1$

素因数の和:1230

約数の個数: 48

約数和(自身を含む): 181748448

約数和(自身を除く): 100419428

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 251, 340, 502, 953, 1004, 1255, 1906, 2510, 3812, 4267, 4765, 5020, 8534, 9530, 16201, 17068, 19060, 21335, 32402, 42670, 64804, 81005, 85340, 162010, 239203, 324020, 478406, 956812, 1196015, 2392030, 4066451, 4784060, 8132902, 16265804, 20332255, 40664510, 81329020]

約数ペア:

[(1, 81329020), (2, 40664510), (4, 20332255), (5, 16265804), (10, 8132902), (17, 4784060), (20, 4066451), (34, 2392030), (68, 1196015), (85, 956812), (170, 478406), (251, 324020), (340, 239203), (502, 162010), (953, 85340), (1004, 81005), (1255, 64804), (1906, 42670), (2510, 32402), (3812, 21335), (4267, 19060), (4765, 17068), (5020, 16201), (8534, 9530)]