256395520

素因数分解:

$2^8\times 5^1\times {\mathrm{383}}^1\times {\mathrm{523}}^1$

素因数の和:927

約数の個数: 72

約数和(自身を含む): 616928256

約数和(自身を除く): 360532736

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 383, 523, 640, 766, 1046, 1280, 1532, 1915, 2092, 2615, 3064, 3830, 4184, 5230, 6128, 7660, 8368, 10460, 12256, 15320, 16736, 20920, 24512, 30640, 33472, 41840, 49024, 61280, 66944, 83680, 98048, 122560, 133888, 167360, 200309, 245120, 334720, 400618, 490240, 669440, 801236, 1001545, 1602472, 2003090, 3204944, 4006180, 6409888, 8012360, 12819776, 16024720, 25639552, 32049440, 51279104, 64098880, 128197760, 256395520]

約数ペア:

[(1, 256395520), (2, 128197760), (4, 64098880), (5, 51279104), (8, 32049440), (10, 25639552), (16, 16024720), (20, 12819776), (32, 8012360), (40, 6409888), (64, 4006180), (80, 3204944), (128, 2003090), (160, 1602472), (256, 1001545), (320, 801236), (383, 669440), (523, 490240), (640, 400618), (766, 334720), (1046, 245120), (1280, 200309), (1532, 167360), (1915, 133888), (2092, 122560), (2615, 98048), (3064, 83680), (3830, 66944), (4184, 61280), (5230, 49024), (6128, 41840), (7660, 33472), (8368, 30640), (10460, 24512), (12256, 20920), (15320, 16736)]