291920

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1$

素因数の和:143

約数の個数: 40

約数和(自身を含む): 703080

約数和(自身を除く): 411160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 89, 164, 178, 205, 328, 356, 410, 445, 656, 712, 820, 890, 1424, 1640, 1780, 3280, 3560, 3649, 7120, 7298, 14596, 18245, 29192, 36490, 58384, 72980, 145960, 291920]

約数ペア:

[(1, 291920), (2, 145960), (4, 72980), (5, 58384), (8, 36490), (10, 29192), (16, 18245), (20, 14596), (40, 7298), (41, 7120), (80, 3649), (82, 3560), (89, 3280), (164, 1780), (178, 1640), (205, 1424), (328, 890), (356, 820), (410, 712), (445, 656)]