51413240

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{1109}}^1$

素因数の和:1200

約数の個数: 64

約数和(自身を含む): 123876000

約数和(自身を除く): 72462760

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 61, 76, 95, 122, 152, 190, 244, 305, 380, 488, 610, 760, 1109, 1159, 1220, 2218, 2318, 2440, 4436, 4636, 5545, 5795, 8872, 9272, 11090, 11590, 21071, 22180, 23180, 42142, 44360, 46360, 67649, 84284, 105355, 135298, 168568, 210710, 270596, 338245, 421420, 541192, 676490, 842840, 1285331, 1352980, 2570662, 2705960, 5141324, 6426655, 10282648, 12853310, 25706620, 51413240]

約数ペア:

[(1, 51413240), (2, 25706620), (4, 12853310), (5, 10282648), (8, 6426655), (10, 5141324), (19, 2705960), (20, 2570662), (38, 1352980), (40, 1285331), (61, 842840), (76, 676490), (95, 541192), (122, 421420), (152, 338245), (190, 270596), (244, 210710), (305, 168568), (380, 135298), (488, 105355), (610, 84284), (760, 67649), (1109, 46360), (1159, 44360), (1220, 42142), (2218, 23180), (2318, 22180), (2440, 21071), (4436, 11590), (4636, 11090), (5545, 9272), (5795, 8872)]