19958904499

素因数分解:

${\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{139}}^1\times {\mathrm{257}}^1\times {\mathrm{269}}^1$

素因数の和:763

約数の個数: 32

約数和(自身を含む): 21221222400

約数和(自身を除く): 1262317901

約数列:

[1, 31, 67, 139, 257, 269, 2077, 4309, 7967, 8339, 9313, 17219, 18023, 35723, 37391, 69133, 288703, 533789, 558713, 1107413, 1159121, 2143123, 2393441, 2505197, 4631911, 9609487, 74196671, 77661107, 143589241, 297894097, 643835629, 19958904499]

約数ペア:

[(1, 19958904499), (31, 643835629), (67, 297894097), (139, 143589241), (257, 77661107), (269, 74196671), (2077, 9609487), (4309, 4631911), (7967, 2505197), (8339, 2393441), (9313, 2143123), (17219, 1159121), (18023, 1107413), (35723, 558713), (37391, 533789), (69133, 288703)]