199921960

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{102001}}^1$

素因数の和:102026

約数の個数: 48

約数和(自身を含む): 523270260

約数和(自身を除く): 323348300

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 102001, 204002, 408004, 510005, 714007, 816008, 1020010, 1428014, 2040020, 2856028, 3570035, 4080040, 4998049, 5712056, 7140070, 9996098, 14280140, 19992196, 24990245, 28560280, 39984392, 49980490, 99960980, 199921960]

約数ペア:

[(1, 199921960), (2, 99960980), (4, 49980490), (5, 39984392), (7, 28560280), (8, 24990245), (10, 19992196), (14, 14280140), (20, 9996098), (28, 7140070), (35, 5712056), (40, 4998049), (49, 4080040), (56, 3570035), (70, 2856028), (98, 2040020), (140, 1428014), (196, 1020010), (245, 816008), (280, 714007), (392, 510005), (490, 408004), (980, 204002), (1960, 102001)]