19821490

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{8969}}^1$

素因数の和:9006

約数の個数: 32

約数和(自身を含む): 40687920

約数和(自身を除く): 20866430

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 65, 85, 130, 170, 221, 442, 1105, 2210, 8969, 17938, 44845, 89690, 116597, 152473, 233194, 304946, 582985, 762365, 1165970, 1524730, 1982149, 3964298, 9910745, 19821490]

約数ペア:

[(1, 19821490), (2, 9910745), (5, 3964298), (10, 1982149), (13, 1524730), (17, 1165970), (26, 762365), (34, 582985), (65, 304946), (85, 233194), (130, 152473), (170, 116597), (221, 89690), (442, 44845), (1105, 17938), (2210, 8969)]