21000306561

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{48673}}^1$

素因数の和:48762

約数の個数: 48

約数和(自身を含む): 32493983616

約数和(自身を除く): 11493677055

約数列:

[1, 3, 13, 23, 37, 39, 69, 111, 169, 299, 481, 507, 851, 897, 1443, 2553, 3887, 6253, 11063, 11661, 18759, 33189, 48673, 143819, 146019, 431457, 632749, 1119479, 1800901, 1898247, 3358437, 5402703, 8225737, 14553227, 23411713, 24677211, 41420723, 43659681, 70235139, 124262169, 189191951, 304352269, 538469399, 567575853, 913056807, 1615408197, 7000102187, 21000306561]

約数ペア:

[(1, 21000306561), (3, 7000102187), (13, 1615408197), (23, 913056807), (37, 567575853), (39, 538469399), (69, 304352269), (111, 189191951), (169, 124262169), (299, 70235139), (481, 43659681), (507, 41420723), (851, 24677211), (897, 23411713), (1443, 14553227), (2553, 8225737), (3887, 5402703), (6253, 3358437), (11063, 1898247), (11661, 1800901), (18759, 1119479), (33189, 632749), (48673, 431457), (143819, 146019)]