2131273880

素因数分解:

$2^3\times 5^1\times {\mathrm{491}}^1\times {\mathrm{108517}}^1$

素因数の和:109019

約数の個数: 32

約数和(自身を含む): 4805177040

約数和(自身を除く): 2673903160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 491, 982, 1964, 2455, 3928, 4910, 9820, 19640, 108517, 217034, 434068, 542585, 868136, 1085170, 2170340, 4340680, 53281847, 106563694, 213127388, 266409235, 426254776, 532818470, 1065636940, 2131273880]

約数ペア:

[(1, 2131273880), (2, 1065636940), (4, 532818470), (5, 426254776), (8, 266409235), (10, 213127388), (20, 106563694), (40, 53281847), (491, 4340680), (982, 2170340), (1964, 1085170), (2455, 868136), (3928, 542585), (4910, 434068), (9820, 217034), (19640, 108517)]