72158720

素因数分解:

$2^9\times 5^1\times {\mathrm{71}}^1\times {\mathrm{397}}^1$

素因数の和:491

約数の個数: 80

約数和(自身を含む): 175890528

約数和(自身を除く): 103731808

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 71, 80, 128, 142, 160, 256, 284, 320, 355, 397, 512, 568, 640, 710, 794, 1136, 1280, 1420, 1588, 1985, 2272, 2560, 2840, 3176, 3970, 4544, 5680, 6352, 7940, 9088, 11360, 12704, 15880, 18176, 22720, 25408, 28187, 31760, 36352, 45440, 50816, 56374, 63520, 90880, 101632, 112748, 127040, 140935, 181760, 203264, 225496, 254080, 281870, 450992, 508160, 563740, 901984, 1016320, 1127480, 1803968, 2254960, 3607936, 4509920, 7215872, 9019840, 14431744, 18039680, 36079360, 72158720]

約数ペア:

[(1, 72158720), (2, 36079360), (4, 18039680), (5, 14431744), (8, 9019840), (10, 7215872), (16, 4509920), (20, 3607936), (32, 2254960), (40, 1803968), (64, 1127480), (71, 1016320), (80, 901984), (128, 563740), (142, 508160), (160, 450992), (256, 281870), (284, 254080), (320, 225496), (355, 203264), (397, 181760), (512, 140935), (568, 127040), (640, 112748), (710, 101632), (794, 90880), (1136, 63520), (1280, 56374), (1420, 50816), (1588, 45440), (1985, 36352), (2272, 31760), (2560, 28187), (2840, 25408), (3176, 22720), (3970, 18176), (4544, 15880), (5680, 12704), (6352, 11360), (7940, 9088)]