256444160

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{28621}}^1$

素因数の和:28649

約数の個数: 72

約数和(自身を含む): 702040416

約数和(自身を除く): 445596256

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, 28621, 57242, 114484, 143105, 200347, 228968, 286210, 400694, 457936, 572420, 801388, 915872, 1001735, 1144840, 1602776, 1831744, 2003470, 2289680, 3205552, 3663488, 4006940, 4579360, 6411104, 7326976, 8013880, 9158720, 12822208, 16027760, 18317440, 25644416, 32055520, 36634880, 51288832, 64111040, 128222080, 256444160]

約数ペア:

[(1, 256444160), (2, 128222080), (4, 64111040), (5, 51288832), (7, 36634880), (8, 32055520), (10, 25644416), (14, 18317440), (16, 16027760), (20, 12822208), (28, 9158720), (32, 8013880), (35, 7326976), (40, 6411104), (56, 4579360), (64, 4006940), (70, 3663488), (80, 3205552), (112, 2289680), (128, 2003470), (140, 1831744), (160, 1602776), (224, 1144840), (256, 1001735), (280, 915872), (320, 801388), (448, 572420), (560, 457936), (640, 400694), (896, 286210), (1120, 228968), (1280, 200347), (1792, 143105), (2240, 114484), (4480, 57242), (8960, 28621)]