208966480

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{42821}}^1$

素因数の和:42895

約数の個数: 40

約数和(自身を含む): 493823304

約数和(自身を除く): 284856824

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4880, 42821, 85642, 171284, 214105, 342568, 428210, 685136, 856420, 1712840, 2612081, 3425680, 5224162, 10448324, 13060405, 20896648, 26120810, 41793296, 52241620, 104483240, 208966480]

約数ペア:

[(1, 208966480), (2, 104483240), (4, 52241620), (5, 41793296), (8, 26120810), (10, 20896648), (16, 13060405), (20, 10448324), (40, 5224162), (61, 3425680), (80, 2612081), (122, 1712840), (244, 856420), (305, 685136), (488, 428210), (610, 342568), (976, 214105), (1220, 171284), (2440, 85642), (4880, 42821)]