28925680

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{157}}^1$

素因数の和:231

約数の個数: 120

約数和(自身を含む): 80405568

約数和(自身を除く): 51479888

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 47, 49, 56, 70, 80, 94, 98, 112, 140, 157, 188, 196, 235, 245, 280, 314, 329, 376, 392, 470, 490, 560, 628, 658, 752, 784, 785, 940, 980, 1099, 1256, 1316, 1570, 1645, 1880, 1960, 2198, 2303, 2512, 2632, 3140, 3290, 3760, 3920, 4396, 4606, 5264, 5495, 6280, 6580, 7379, 7693, 8792, 9212, 10990, 11515, 12560, 13160, 14758, 15386, 17584, 18424, 21980, 23030, 26320, 29516, 30772, 36848, 36895, 38465, 43960, 46060, 51653, 59032, 61544, 73790, 76930, 87920, 92120, 103306, 118064, 123088, 147580, 153860, 184240, 206612, 258265, 295160, 307720, 361571, 413224, 516530, 590320, 615440, 723142, 826448, 1033060, 1446284, 1807855, 2066120, 2892568, 3615710, 4132240, 5785136, 7231420, 14462840, 28925680]

約数ペア:

[(1, 28925680), (2, 14462840), (4, 7231420), (5, 5785136), (7, 4132240), (8, 3615710), (10, 2892568), (14, 2066120), (16, 1807855), (20, 1446284), (28, 1033060), (35, 826448), (40, 723142), (47, 615440), (49, 590320), (56, 516530), (70, 413224), (80, 361571), (94, 307720), (98, 295160), (112, 258265), (140, 206612), (157, 184240), (188, 153860), (196, 147580), (235, 123088), (245, 118064), (280, 103306), (314, 92120), (329, 87920), (376, 76930), (392, 73790), (470, 61544), (490, 59032), (560, 51653), (628, 46060), (658, 43960), (752, 38465), (784, 36895), (785, 36848), (940, 30772), (980, 29516), (1099, 26320), (1256, 23030), (1316, 21980), (1570, 18424), (1645, 17584), (1880, 15386), (1960, 14758), (2198, 13160), (2303, 12560), (2512, 11515), (2632, 10990), (3140, 9212), (3290, 8792), (3760, 7693), (3920, 7379), (4396, 6580), (4606, 6280), (5264, 5495)]