28202720

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{149}}^1$

素因数の和:197

約数の個数: 144

約数和(自身を含む): 83008800

約数和(自身を除く): 54806080

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 32, 35, 40, 52, 56, 65, 70, 80, 91, 104, 112, 130, 140, 149, 160, 169, 182, 208, 224, 260, 280, 298, 338, 364, 416, 455, 520, 560, 596, 676, 728, 745, 845, 910, 1040, 1043, 1120, 1183, 1192, 1352, 1456, 1490, 1690, 1820, 1937, 2080, 2086, 2366, 2384, 2704, 2912, 2980, 3380, 3640, 3874, 4172, 4732, 4768, 5215, 5408, 5915, 5960, 6760, 7280, 7748, 8344, 9464, 9685, 10430, 11830, 11920, 13520, 13559, 14560, 15496, 16688, 18928, 19370, 20860, 23660, 23840, 25181, 27040, 27118, 30992, 33376, 37856, 38740, 41720, 47320, 50362, 54236, 61984, 67795, 77480, 83440, 94640, 100724, 108472, 125905, 135590, 154960, 166880, 176267, 189280, 201448, 216944, 251810, 271180, 309920, 352534, 402896, 433888, 503620, 542360, 705068, 805792, 881335, 1007240, 1084720, 1410136, 1762670, 2014480, 2169440, 2820272, 3525340, 4028960, 5640544, 7050680, 14101360, 28202720]

約数ペア:

[(1, 28202720), (2, 14101360), (4, 7050680), (5, 5640544), (7, 4028960), (8, 3525340), (10, 2820272), (13, 2169440), (14, 2014480), (16, 1762670), (20, 1410136), (26, 1084720), (28, 1007240), (32, 881335), (35, 805792), (40, 705068), (52, 542360), (56, 503620), (65, 433888), (70, 402896), (80, 352534), (91, 309920), (104, 271180), (112, 251810), (130, 216944), (140, 201448), (149, 189280), (160, 176267), (169, 166880), (182, 154960), (208, 135590), (224, 125905), (260, 108472), (280, 100724), (298, 94640), (338, 83440), (364, 77480), (416, 67795), (455, 61984), (520, 54236), (560, 50362), (596, 47320), (676, 41720), (728, 38740), (745, 37856), (845, 33376), (910, 30992), (1040, 27118), (1043, 27040), (1120, 25181), (1183, 23840), (1192, 23660), (1352, 20860), (1456, 19370), (1490, 18928), (1690, 16688), (1820, 15496), (1937, 14560), (2080, 13559), (2086, 13520), (2366, 11920), (2384, 11830), (2704, 10430), (2912, 9685), (2980, 9464), (3380, 8344), (3640, 7748), (3874, 7280), (4172, 6760), (4732, 5960), (4768, 5915), (5215, 5408)]