12966456280

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{181}}^1\times {\mathrm{20123}}^1$

素因数の和:20404

約数の個数: 64

約数和(自身を含む): 29666800800

約数和(自身を除く): 16700344520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 181, 356, 362, 445, 712, 724, 890, 905, 1448, 1780, 1810, 3560, 3620, 7240, 16109, 20123, 32218, 40246, 64436, 80492, 80545, 100615, 128872, 160984, 161090, 201230, 322180, 402460, 644360, 804920, 1790947, 3581894, 3642263, 7163788, 7284526, 8954735, 14327576, 14569052, 17909470, 18211315, 29138104, 35818940, 36422630, 71637880, 72845260, 145690520, 324161407, 648322814, 1296645628, 1620807035, 2593291256, 3241614070, 6483228140, 12966456280]

約数ペア:

[(1, 12966456280), (2, 6483228140), (4, 3241614070), (5, 2593291256), (8, 1620807035), (10, 1296645628), (20, 648322814), (40, 324161407), (89, 145690520), (178, 72845260), (181, 71637880), (356, 36422630), (362, 35818940), (445, 29138104), (712, 18211315), (724, 17909470), (890, 14569052), (905, 14327576), (1448, 8954735), (1780, 7284526), (1810, 7163788), (3560, 3642263), (3620, 3581894), (7240, 1790947), (16109, 804920), (20123, 644360), (32218, 402460), (40246, 322180), (64436, 201230), (80492, 161090), (80545, 160984), (100615, 128872)]