19539920

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{7879}}^1$

素因数の和:7923

約数の個数: 40

約数和(自身を含む): 46901760

約数和(自身を除く): 27361840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 7879, 15758, 31516, 39395, 63032, 78790, 126064, 157580, 244249, 315160, 488498, 630320, 976996, 1221245, 1953992, 2442490, 3907984, 4884980, 9769960, 19539920]

約数ペア:

[(1, 19539920), (2, 9769960), (4, 4884980), (5, 3907984), (8, 2442490), (10, 1953992), (16, 1221245), (20, 976996), (31, 630320), (40, 488498), (62, 315160), (80, 244249), (124, 157580), (155, 126064), (248, 78790), (310, 63032), (496, 39395), (620, 31516), (1240, 15758), (2480, 7879)]