102020000

素因数分解:

$2^5\times 5^4\times {\mathrm{5101}}^1$

素因数の和:5131

約数の個数: 60

約数和(自身を含む): 251033706

約数和(自身を除く): 149013706

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 500, 625, 800, 1000, 1250, 2000, 2500, 4000, 5000, 5101, 10000, 10202, 20000, 20404, 25505, 40808, 51010, 81616, 102020, 127525, 163232, 204040, 255050, 408080, 510100, 637625, 816160, 1020200, 1275250, 2040400, 2550500, 3188125, 4080800, 5101000, 6376250, 10202000, 12752500, 20404000, 25505000, 51010000, 102020000]

約数ペア:

[(1, 102020000), (2, 51010000), (4, 25505000), (5, 20404000), (8, 12752500), (10, 10202000), (16, 6376250), (20, 5101000), (25, 4080800), (32, 3188125), (40, 2550500), (50, 2040400), (80, 1275250), (100, 1020200), (125, 816160), (160, 637625), (200, 510100), (250, 408080), (400, 255050), (500, 204040), (625, 163232), (800, 127525), (1000, 102020), (1250, 81616), (2000, 51010), (2500, 40808), (4000, 25505), (5000, 20404), (5101, 20000), (10000, 10202)]