21000978843

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{163}}^1\times {\mathrm{199}}^1\times {\mathrm{1277}}^1$

素因数の和:1668

約数の個数: 48

約数和(自身を含む): 30684268800

約数和(自身を除く): 9683289957

約数列:

[1, 3, 13, 39, 163, 169, 199, 489, 507, 597, 1277, 2119, 2587, 3831, 6357, 7761, 16601, 27547, 32437, 33631, 49803, 82641, 97311, 100893, 208151, 215813, 254123, 421681, 624453, 647439, 762369, 1265043, 2705963, 3303599, 5481853, 8117889, 9910797, 16445559, 35177519, 41422049, 42946787, 105532557, 124266147, 128840361, 538486637, 1615459911, 7000326281, 21000978843]

約数ペア:

[(1, 21000978843), (3, 7000326281), (13, 1615459911), (39, 538486637), (163, 128840361), (169, 124266147), (199, 105532557), (489, 42946787), (507, 41422049), (597, 35177519), (1277, 16445559), (2119, 9910797), (2587, 8117889), (3831, 5481853), (6357, 3303599), (7761, 2705963), (16601, 1265043), (27547, 762369), (32437, 647439), (33631, 624453), (49803, 421681), (82641, 254123), (97311, 215813), (100893, 208151)]