1212778910

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{421}}^1\times {\mathrm{5879}}^1$

素因数の和:6321

約数の個数: 48

約数和(自身を含む): 2545875360

約数和(自身を除く): 1333096450

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 421, 490, 842, 2105, 2947, 4210, 5879, 5894, 11758, 14735, 20629, 29395, 29470, 41153, 41258, 58790, 82306, 103145, 205765, 206290, 288071, 411530, 576142, 1440355, 2475059, 2880710, 4950118, 12375295, 17325413, 24750590, 34650826, 86627065, 121277891, 173254130, 242555782, 606389455, 1212778910]

約数ペア:

[(1, 1212778910), (2, 606389455), (5, 242555782), (7, 173254130), (10, 121277891), (14, 86627065), (35, 34650826), (49, 24750590), (70, 17325413), (98, 12375295), (245, 4950118), (421, 2880710), (490, 2475059), (842, 1440355), (2105, 576142), (2947, 411530), (4210, 288071), (5879, 206290), (5894, 205765), (11758, 103145), (14735, 82306), (20629, 58790), (29395, 41258), (29470, 41153)]