28103610100

素因数分解:

$2^2\times 5^2\times {\mathrm{79}}^1\times {\mathrm{89}}^1\times {\mathrm{39971}}^1$

素因数の和:40153

約数の個数: 72

約数和(自身を含む): 62452252800

約数和(自身を除く): 34348642700

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 79, 89, 100, 158, 178, 316, 356, 395, 445, 790, 890, 1580, 1780, 1975, 2225, 3950, 4450, 7031, 7900, 8900, 14062, 28124, 35155, 39971, 70310, 79942, 140620, 159884, 175775, 199855, 351550, 399710, 703100, 799420, 999275, 1998550, 3157709, 3557419, 3997100, 6315418, 7114838, 12630836, 14229676, 15788545, 17787095, 31577090, 35574190, 63154180, 71148380, 78942725, 88935475, 157885450, 177870950, 281036101, 315770900, 355741900, 562072202, 1124144404, 1405180505, 2810361010, 5620722020, 7025902525, 14051805050, 28103610100]

約数ペア:

[(1, 28103610100), (2, 14051805050), (4, 7025902525), (5, 5620722020), (10, 2810361010), (20, 1405180505), (25, 1124144404), (50, 562072202), (79, 355741900), (89, 315770900), (100, 281036101), (158, 177870950), (178, 157885450), (316, 88935475), (356, 78942725), (395, 71148380), (445, 63154180), (790, 35574190), (890, 31577090), (1580, 17787095), (1780, 15788545), (1975, 14229676), (2225, 12630836), (3950, 7114838), (4450, 6315418), (7031, 3997100), (7900, 3557419), (8900, 3157709), (14062, 1998550), (28124, 999275), (35155, 799420), (39971, 703100), (70310, 399710), (79942, 351550), (140620, 199855), (159884, 175775)]