19972142

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{509}}^1\times {\mathrm{853}}^1$

素因数の和:1387

約数の個数: 16

約数和(自身を含む): 31358880

約数和(自身を除く): 11386738

約数列:

[1, 2, 23, 46, 509, 853, 1018, 1706, 11707, 19619, 23414, 39238, 434177, 868354, 9986071, 19972142]

約数ペア:

[(1, 19972142), (2, 9986071), (23, 868354), (46, 434177), (509, 39238), (853, 23414), (1018, 19619), (1706, 11707)]