28002520

素因数分解:

$2^3\times 5^1\times 7^3\times {\mathrm{13}}^1\times {\mathrm{157}}^1$

素因数の和:202

約数の個数: 128

約数和(自身を含む): 79632000

約数和(自身を除く): 51629480

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 49, 52, 56, 65, 70, 91, 98, 104, 130, 140, 157, 182, 196, 245, 260, 280, 314, 343, 364, 392, 455, 490, 520, 628, 637, 686, 728, 785, 910, 980, 1099, 1256, 1274, 1372, 1570, 1715, 1820, 1960, 2041, 2198, 2548, 2744, 3140, 3185, 3430, 3640, 4082, 4396, 4459, 5096, 5495, 6280, 6370, 6860, 7693, 8164, 8792, 8918, 10205, 10990, 12740, 13720, 14287, 15386, 16328, 17836, 20410, 21980, 22295, 25480, 28574, 30772, 35672, 38465, 40820, 43960, 44590, 53851, 57148, 61544, 71435, 76930, 81640, 89180, 100009, 107702, 114296, 142870, 153860, 178360, 200018, 215404, 269255, 285740, 307720, 400036, 430808, 500045, 538510, 571480, 700063, 800072, 1000090, 1077020, 1400126, 2000180, 2154040, 2800252, 3500315, 4000360, 5600504, 7000630, 14001260, 28002520]

約数ペア:

[(1, 28002520), (2, 14001260), (4, 7000630), (5, 5600504), (7, 4000360), (8, 3500315), (10, 2800252), (13, 2154040), (14, 2000180), (20, 1400126), (26, 1077020), (28, 1000090), (35, 800072), (40, 700063), (49, 571480), (52, 538510), (56, 500045), (65, 430808), (70, 400036), (91, 307720), (98, 285740), (104, 269255), (130, 215404), (140, 200018), (157, 178360), (182, 153860), (196, 142870), (245, 114296), (260, 107702), (280, 100009), (314, 89180), (343, 81640), (364, 76930), (392, 71435), (455, 61544), (490, 57148), (520, 53851), (628, 44590), (637, 43960), (686, 40820), (728, 38465), (785, 35672), (910, 30772), (980, 28574), (1099, 25480), (1256, 22295), (1274, 21980), (1372, 20410), (1570, 17836), (1715, 16328), (1820, 15386), (1960, 14287), (2041, 13720), (2198, 12740), (2548, 10990), (2744, 10205), (3140, 8918), (3185, 8792), (3430, 8164), (3640, 7693), (4082, 6860), (4396, 6370), (4459, 6280), (5096, 5495)]