320720

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{211}}^1$

素因数の和:243

約数の個数: 40

約数和(自身を含む): 788640

約数和(自身を除く): 467920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 211, 304, 380, 422, 760, 844, 1055, 1520, 1688, 2110, 3376, 4009, 4220, 8018, 8440, 16036, 16880, 20045, 32072, 40090, 64144, 80180, 160360, 320720]

約数ペア:

[(1, 320720), (2, 160360), (4, 80180), (5, 64144), (8, 40090), (10, 32072), (16, 20045), (19, 16880), (20, 16036), (38, 8440), (40, 8018), (76, 4220), (80, 4009), (95, 3376), (152, 2110), (190, 1688), (211, 1520), (304, 1055), (380, 844), (422, 760)]