255561460

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{151}}^1\times {\mathrm{157}}^1$

素因数の和:342

約数の個数: 144

約数和(自身を含む): 689931648

約数和(自身を除く): 434370188

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 49, 55, 70, 77, 98, 110, 140, 151, 154, 157, 196, 220, 245, 302, 308, 314, 385, 490, 539, 604, 628, 755, 770, 785, 980, 1057, 1078, 1099, 1510, 1540, 1570, 1661, 1727, 2114, 2156, 2198, 2695, 3020, 3140, 3322, 3454, 4228, 4396, 5285, 5390, 5495, 6644, 6908, 7399, 7693, 8305, 8635, 10570, 10780, 10990, 11627, 12089, 14798, 15386, 16610, 17270, 21140, 21980, 23254, 23707, 24178, 29596, 30772, 33220, 34540, 36995, 38465, 46508, 47414, 48356, 58135, 60445, 73990, 76930, 81389, 84623, 94828, 116270, 118535, 120890, 147980, 153860, 162778, 165949, 169246, 232540, 237070, 241780, 260777, 325556, 331898, 338492, 406945, 423115, 474140, 521554, 663796, 813890, 829745, 846230, 1043108, 1161643, 1303885, 1627780, 1659490, 1692460, 1825439, 2323286, 2607770, 3318980, 3650878, 4646572, 5215540, 5808215, 7301756, 9127195, 11616430, 12778073, 18254390, 23232860, 25556146, 36508780, 51112292, 63890365, 127780730, 255561460]

約数ペア:

[(1, 255561460), (2, 127780730), (4, 63890365), (5, 51112292), (7, 36508780), (10, 25556146), (11, 23232860), (14, 18254390), (20, 12778073), (22, 11616430), (28, 9127195), (35, 7301756), (44, 5808215), (49, 5215540), (55, 4646572), (70, 3650878), (77, 3318980), (98, 2607770), (110, 2323286), (140, 1825439), (151, 1692460), (154, 1659490), (157, 1627780), (196, 1303885), (220, 1161643), (245, 1043108), (302, 846230), (308, 829745), (314, 813890), (385, 663796), (490, 521554), (539, 474140), (604, 423115), (628, 406945), (755, 338492), (770, 331898), (785, 325556), (980, 260777), (1057, 241780), (1078, 237070), (1099, 232540), (1510, 169246), (1540, 165949), (1570, 162778), (1661, 153860), (1727, 147980), (2114, 120890), (2156, 118535), (2198, 116270), (2695, 94828), (3020, 84623), (3140, 81389), (3322, 76930), (3454, 73990), (4228, 60445), (4396, 58135), (5285, 48356), (5390, 47414), (5495, 46508), (6644, 38465), (6908, 36995), (7399, 34540), (7693, 33220), (8305, 30772), (8635, 29596), (10570, 24178), (10780, 23707), (10990, 23254), (11627, 21980), (12089, 21140), (14798, 17270), (15386, 16610)]