19980790

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{797}}^1$

素因数の和:936

約数の個数: 32

約数和(自身を含む): 37920960

約数和(自身を除く): 17940170

約数列:

[1, 2, 5, 10, 23, 46, 109, 115, 218, 230, 545, 797, 1090, 1594, 2507, 3985, 5014, 7970, 12535, 18331, 25070, 36662, 86873, 91655, 173746, 183310, 434365, 868730, 1998079, 3996158, 9990395, 19980790]

約数ペア:

[(1, 19980790), (2, 9990395), (5, 3996158), (10, 1998079), (23, 868730), (46, 434365), (109, 183310), (115, 173746), (218, 91655), (230, 86873), (545, 36662), (797, 25070), (1090, 18331), (1594, 12535), (2507, 7970), (3985, 5014)]