28724920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{173}}^1\times {\mathrm{593}}^1$

素因数の和:784

約数の個数: 64

約数和(自身を含む): 74416320

約数和(自身を除く): 45691400

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 173, 280, 346, 593, 692, 865, 1186, 1211, 1384, 1730, 2372, 2422, 2965, 3460, 4151, 4744, 4844, 5930, 6055, 6920, 8302, 9688, 11860, 12110, 16604, 20755, 23720, 24220, 33208, 41510, 48440, 83020, 102589, 166040, 205178, 410356, 512945, 718123, 820712, 1025890, 1436246, 2051780, 2872492, 3590615, 4103560, 5744984, 7181230, 14362460, 28724920]

約数ペア:

[(1, 28724920), (2, 14362460), (4, 7181230), (5, 5744984), (7, 4103560), (8, 3590615), (10, 2872492), (14, 2051780), (20, 1436246), (28, 1025890), (35, 820712), (40, 718123), (56, 512945), (70, 410356), (140, 205178), (173, 166040), (280, 102589), (346, 83020), (593, 48440), (692, 41510), (865, 33208), (1186, 24220), (1211, 23720), (1384, 20755), (1730, 16604), (2372, 12110), (2422, 11860), (2965, 9688), (3460, 8302), (4151, 6920), (4744, 6055), (4844, 5930)]