19855421885

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{293}}^1\times {\mathrm{6997}}^1$

素因数の和:7457

約数の個数: 32

約数和(自身を含む): 25923391200

約数和(自身を除く): 6067969315

約数列:

[1, 5, 13, 65, 149, 293, 745, 1465, 1937, 3809, 6997, 9685, 19045, 34985, 43657, 90961, 218285, 454805, 567541, 1042553, 2050121, 2837705, 5212765, 10250605, 13553189, 26651573, 67765945, 133257865, 305468029, 1527340145, 3971084377, 19855421885]

約数ペア:

[(1, 19855421885), (5, 3971084377), (13, 1527340145), (65, 305468029), (149, 133257865), (293, 67765945), (745, 26651573), (1465, 13553189), (1937, 10250605), (3809, 5212765), (6997, 2837705), (9685, 2050121), (19045, 1042553), (34985, 567541), (43657, 454805), (90961, 218285)]