489702980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{25801}}^1$

素因数の和:25896

約数の個数: 48

約数和(自身を含む): 1122696624

約数和(自身を除く): 632993644

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 73, 130, 146, 260, 292, 365, 730, 949, 1460, 1898, 3796, 4745, 9490, 18980, 25801, 51602, 103204, 129005, 258010, 335413, 516020, 670826, 1341652, 1677065, 1883473, 3354130, 3766946, 6708260, 7533892, 9417365, 18834730, 24485149, 37669460, 48970298, 97940596, 122425745, 244851490, 489702980]

約数ペア:

[(1, 489702980), (2, 244851490), (4, 122425745), (5, 97940596), (10, 48970298), (13, 37669460), (20, 24485149), (26, 18834730), (52, 9417365), (65, 7533892), (73, 6708260), (130, 3766946), (146, 3354130), (260, 1883473), (292, 1677065), (365, 1341652), (730, 670826), (949, 516020), (1460, 335413), (1898, 258010), (3796, 129005), (4745, 103204), (9490, 51602), (18980, 25801)]