7200820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{461}}^1$

素因数の和:552

約数の個数: 48

約数和(自身を含む): 16765056

約数和(自身を除く): 9564236

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 71, 110, 142, 220, 284, 355, 461, 710, 781, 922, 1420, 1562, 1844, 2305, 3124, 3905, 4610, 5071, 7810, 9220, 10142, 15620, 20284, 25355, 32731, 50710, 65462, 101420, 130924, 163655, 327310, 360041, 654620, 720082, 1440164, 1800205, 3600410, 7200820]

約数ペア:

[(1, 7200820), (2, 3600410), (4, 1800205), (5, 1440164), (10, 720082), (11, 654620), (20, 360041), (22, 327310), (44, 163655), (55, 130924), (71, 101420), (110, 65462), (142, 50710), (220, 32731), (284, 25355), (355, 20284), (461, 15620), (710, 10142), (781, 9220), (922, 7810), (1420, 5071), (1562, 4610), (1844, 3905), (2305, 3124)]