20671570480

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{373}}^1\times {\mathrm{887}}^1$

素因数の和:1355

約数の個数: 160

約数和(自身を含む): 53371726848

約数和(自身を除く): 32700156368

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 71, 80, 88, 110, 142, 176, 220, 284, 355, 373, 440, 568, 710, 746, 781, 880, 887, 1136, 1420, 1492, 1562, 1774, 1865, 2840, 2984, 3124, 3548, 3730, 3905, 4103, 4435, 5680, 5968, 6248, 7096, 7460, 7810, 8206, 8870, 9757, 12496, 14192, 14920, 15620, 16412, 17740, 19514, 20515, 26483, 29840, 31240, 32824, 35480, 39028, 41030, 48785, 52966, 62480, 62977, 65648, 70960, 78056, 82060, 97570, 105932, 125954, 132415, 156112, 164120, 195140, 211864, 251908, 264830, 291313, 314885, 328240, 330851, 390280, 423728, 503816, 529660, 582626, 629770, 661702, 692747, 780560, 1007632, 1059320, 1165252, 1259540, 1323404, 1385494, 1456565, 1654255, 2118640, 2330504, 2519080, 2646808, 2770988, 2913130, 3308510, 3463735, 3639361, 4661008, 5038160, 5293616, 5541976, 5826260, 6617020, 6927470, 7278722, 11083952, 11652520, 13234040, 13854940, 14557444, 18196805, 23305040, 23490421, 26468080, 27709880, 29114888, 36393610, 46980842, 55419760, 58229776, 72787220, 93961684, 117452105, 145574440, 187923368, 234904210, 258394631, 291148880, 375846736, 469808420, 516789262, 939616840, 1033578524, 1291973155, 1879233680, 2067157048, 2583946310, 4134314096, 5167892620, 10335785240, 20671570480]

約数ペア:

[(1, 20671570480), (2, 10335785240), (4, 5167892620), (5, 4134314096), (8, 2583946310), (10, 2067157048), (11, 1879233680), (16, 1291973155), (20, 1033578524), (22, 939616840), (40, 516789262), (44, 469808420), (55, 375846736), (71, 291148880), (80, 258394631), (88, 234904210), (110, 187923368), (142, 145574440), (176, 117452105), (220, 93961684), (284, 72787220), (355, 58229776), (373, 55419760), (440, 46980842), (568, 36393610), (710, 29114888), (746, 27709880), (781, 26468080), (880, 23490421), (887, 23305040), (1136, 18196805), (1420, 14557444), (1492, 13854940), (1562, 13234040), (1774, 11652520), (1865, 11083952), (2840, 7278722), (2984, 6927470), (3124, 6617020), (3548, 5826260), (3730, 5541976), (3905, 5293616), (4103, 5038160), (4435, 4661008), (5680, 3639361), (5968, 3463735), (6248, 3308510), (7096, 2913130), (7460, 2770988), (7810, 2646808), (8206, 2519080), (8870, 2330504), (9757, 2118640), (12496, 1654255), (14192, 1456565), (14920, 1385494), (15620, 1323404), (16412, 1259540), (17740, 1165252), (19514, 1059320), (20515, 1007632), (26483, 780560), (29840, 692747), (31240, 661702), (32824, 629770), (35480, 582626), (39028, 529660), (41030, 503816), (48785, 423728), (52966, 390280), (62480, 330851), (62977, 328240), (65648, 314885), (70960, 291313), (78056, 264830), (82060, 251908), (97570, 211864), (105932, 195140), (125954, 164120), (132415, 156112)]