21989898

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{199}}^1\times {\mathrm{877}}^1$

素因数の和:1091

約数の個数: 48

約数和(自身を含む): 54787200

約数和(自身を除く): 32797302

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 199, 398, 597, 877, 1194, 1393, 1754, 1791, 2631, 2786, 3582, 4179, 5262, 6139, 7893, 8358, 12278, 12537, 15786, 18417, 25074, 36834, 55251, 110502, 174523, 349046, 523569, 1047138, 1221661, 1570707, 2443322, 3141414, 3664983, 7329966, 10994949, 21989898]

約数ペア:

[(1, 21989898), (2, 10994949), (3, 7329966), (6, 3664983), (7, 3141414), (9, 2443322), (14, 1570707), (18, 1221661), (21, 1047138), (42, 523569), (63, 349046), (126, 174523), (199, 110502), (398, 55251), (597, 36834), (877, 25074), (1194, 18417), (1393, 15786), (1754, 12537), (1791, 12278), (2631, 8358), (2786, 7893), (3582, 6139), (4179, 5262)]