27887860

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{199}}^1$

素因数の和:246

約数の個数: 144

約数和(自身を含む): 80438400

約数和(自身を除く): 52550540

約数列:

[1, 2, 4, 5, 7, 10, 11, 13, 14, 20, 22, 26, 28, 35, 44, 49, 52, 55, 65, 70, 77, 91, 98, 110, 130, 140, 143, 154, 182, 196, 199, 220, 245, 260, 286, 308, 364, 385, 398, 455, 490, 539, 572, 637, 715, 770, 796, 910, 980, 995, 1001, 1078, 1274, 1393, 1430, 1540, 1820, 1990, 2002, 2156, 2189, 2548, 2587, 2695, 2786, 2860, 3185, 3980, 4004, 4378, 5005, 5174, 5390, 5572, 6370, 6965, 7007, 8756, 9751, 10010, 10348, 10780, 10945, 12740, 12935, 13930, 14014, 15323, 18109, 19502, 20020, 21890, 25870, 27860, 28028, 28457, 30646, 35035, 36218, 39004, 43780, 48755, 51740, 56914, 61292, 70070, 72436, 76615, 90545, 97510, 107261, 113828, 126763, 140140, 142285, 153230, 181090, 195020, 199199, 214522, 253526, 284570, 306460, 362180, 398398, 429044, 507052, 536305, 569140, 633815, 796796, 995995, 1072610, 1267630, 1394393, 1991990, 2145220, 2535260, 2788786, 3983980, 5577572, 6971965, 13943930, 27887860]

約数ペア:

[(1, 27887860), (2, 13943930), (4, 6971965), (5, 5577572), (7, 3983980), (10, 2788786), (11, 2535260), (13, 2145220), (14, 1991990), (20, 1394393), (22, 1267630), (26, 1072610), (28, 995995), (35, 796796), (44, 633815), (49, 569140), (52, 536305), (55, 507052), (65, 429044), (70, 398398), (77, 362180), (91, 306460), (98, 284570), (110, 253526), (130, 214522), (140, 199199), (143, 195020), (154, 181090), (182, 153230), (196, 142285), (199, 140140), (220, 126763), (245, 113828), (260, 107261), (286, 97510), (308, 90545), (364, 76615), (385, 72436), (398, 70070), (455, 61292), (490, 56914), (539, 51740), (572, 48755), (637, 43780), (715, 39004), (770, 36218), (796, 35035), (910, 30646), (980, 28457), (995, 28028), (1001, 27860), (1078, 25870), (1274, 21890), (1393, 20020), (1430, 19502), (1540, 18109), (1820, 15323), (1990, 14014), (2002, 13930), (2156, 12935), (2189, 12740), (2548, 10945), (2587, 10780), (2695, 10348), (2786, 10010), (2860, 9751), (3185, 8756), (3980, 7007), (4004, 6965), (4378, 6370), (5005, 5572), (5174, 5390)]