51419620

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{71}}^1\times {\mathrm{739}}^1$

素因数の和:833

約数の個数: 72

約数和(自身を含む): 127552320

約数和(自身を除く): 76132700

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 71, 98, 140, 142, 196, 245, 284, 355, 490, 497, 710, 739, 980, 994, 1420, 1478, 1988, 2485, 2956, 3479, 3695, 4970, 5173, 6958, 7390, 9940, 10346, 13916, 14780, 17395, 20692, 25865, 34790, 36211, 51730, 52469, 69580, 72422, 103460, 104938, 144844, 181055, 209876, 262345, 362110, 367283, 524690, 724220, 734566, 1049380, 1469132, 1836415, 2570981, 3672830, 5141962, 7345660, 10283924, 12854905, 25709810, 51419620]

約数ペア:

[(1, 51419620), (2, 25709810), (4, 12854905), (5, 10283924), (7, 7345660), (10, 5141962), (14, 3672830), (20, 2570981), (28, 1836415), (35, 1469132), (49, 1049380), (70, 734566), (71, 724220), (98, 524690), (140, 367283), (142, 362110), (196, 262345), (245, 209876), (284, 181055), (355, 144844), (490, 104938), (497, 103460), (710, 72422), (739, 69580), (980, 52469), (994, 51730), (1420, 36211), (1478, 34790), (1988, 25865), (2485, 20692), (2956, 17395), (3479, 14780), (3695, 13916), (4970, 10346), (5173, 9940), (6958, 7390)]