256318720

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{28607}}^1$

素因数の和:28635

約数の個数: 72

約数和(自身を含む): 701697024

約数和(自身を除く): 445378304

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 160, 224, 256, 280, 320, 448, 560, 640, 896, 1120, 1280, 1792, 2240, 4480, 8960, 28607, 57214, 114428, 143035, 200249, 228856, 286070, 400498, 457712, 572140, 800996, 915424, 1001245, 1144280, 1601992, 1830848, 2002490, 2288560, 3203984, 3661696, 4004980, 4577120, 6407968, 7323392, 8009960, 9154240, 12815936, 16019920, 18308480, 25631872, 32039840, 36616960, 51263744, 64079680, 128159360, 256318720]

約数ペア:

[(1, 256318720), (2, 128159360), (4, 64079680), (5, 51263744), (7, 36616960), (8, 32039840), (10, 25631872), (14, 18308480), (16, 16019920), (20, 12815936), (28, 9154240), (32, 8009960), (35, 7323392), (40, 6407968), (56, 4577120), (64, 4004980), (70, 3661696), (80, 3203984), (112, 2288560), (128, 2002490), (140, 1830848), (160, 1601992), (224, 1144280), (256, 1001245), (280, 915424), (320, 800996), (448, 572140), (560, 457712), (640, 400498), (896, 286070), (1120, 228856), (1280, 200249), (1792, 143035), (2240, 114428), (4480, 57214), (8960, 28607)]