28310240

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{157}}^1$

素因数の和:209

約数の個数: 144

約数和(自身を含む): 81702432

約数和(自身を除く): 53392192

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 32, 35, 40, 46, 49, 56, 70, 80, 92, 98, 112, 115, 140, 157, 160, 161, 184, 196, 224, 230, 245, 280, 314, 322, 368, 392, 460, 490, 560, 628, 644, 736, 784, 785, 805, 920, 980, 1099, 1120, 1127, 1256, 1288, 1568, 1570, 1610, 1840, 1960, 2198, 2254, 2512, 2576, 3140, 3220, 3611, 3680, 3920, 4396, 4508, 5024, 5152, 5495, 5635, 6280, 6440, 7222, 7693, 7840, 8792, 9016, 10990, 11270, 12560, 12880, 14444, 15386, 17584, 18032, 18055, 21980, 22540, 25120, 25277, 25760, 28888, 30772, 35168, 36064, 36110, 38465, 43960, 45080, 50554, 57776, 61544, 72220, 76930, 87920, 90160, 101108, 115552, 123088, 126385, 144440, 153860, 175840, 176939, 180320, 202216, 246176, 252770, 288880, 307720, 353878, 404432, 505540, 577760, 615440, 707756, 808864, 884695, 1011080, 1230880, 1415512, 1769390, 2022160, 2831024, 3538780, 4044320, 5662048, 7077560, 14155120, 28310240]

約数ペア:

[(1, 28310240), (2, 14155120), (4, 7077560), (5, 5662048), (7, 4044320), (8, 3538780), (10, 2831024), (14, 2022160), (16, 1769390), (20, 1415512), (23, 1230880), (28, 1011080), (32, 884695), (35, 808864), (40, 707756), (46, 615440), (49, 577760), (56, 505540), (70, 404432), (80, 353878), (92, 307720), (98, 288880), (112, 252770), (115, 246176), (140, 202216), (157, 180320), (160, 176939), (161, 175840), (184, 153860), (196, 144440), (224, 126385), (230, 123088), (245, 115552), (280, 101108), (314, 90160), (322, 87920), (368, 76930), (392, 72220), (460, 61544), (490, 57776), (560, 50554), (628, 45080), (644, 43960), (736, 38465), (784, 36110), (785, 36064), (805, 35168), (920, 30772), (980, 28888), (1099, 25760), (1120, 25277), (1127, 25120), (1256, 22540), (1288, 21980), (1568, 18055), (1570, 18032), (1610, 17584), (1840, 15386), (1960, 14444), (2198, 12880), (2254, 12560), (2512, 11270), (2576, 10990), (3140, 9016), (3220, 8792), (3611, 7840), (3680, 7693), (3920, 7222), (4396, 6440), (4508, 6280), (5024, 5635), (5152, 5495)]