21520512178

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{1303}}^1\times {\mathrm{7433}}^1$

素因数の和:8850

約数の個数: 32

約数和(自身を含む): 35596132992

約数和(自身を除く): 14075620814

約数列:

[1, 2, 11, 22, 101, 202, 1111, 1303, 2222, 2606, 7433, 14333, 14866, 28666, 81763, 131603, 163526, 263206, 750733, 1447633, 1501466, 2895266, 8258063, 9685199, 16516126, 19370398, 106537189, 213074378, 978205099, 1956410198, 10760256089, 21520512178]

約数ペア:

[(1, 21520512178), (2, 10760256089), (11, 1956410198), (22, 978205099), (101, 213074378), (202, 106537189), (1111, 19370398), (1303, 16516126), (2222, 9685199), (2606, 8258063), (7433, 2895266), (14333, 1501466), (14866, 1447633), (28666, 750733), (81763, 263206), (131603, 163526)]