1291298500

素因数分解:

$2^2\times 5^3\times {\mathrm{521}}^1\times {\mathrm{4957}}^1$

素因数の和:5497

約数の個数: 48

約数和(自身を含む): 2826178992

約数和(自身を除く): 1534880492

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 500, 521, 1042, 2084, 2605, 4957, 5210, 9914, 10420, 13025, 19828, 24785, 26050, 49570, 52100, 65125, 99140, 123925, 130250, 247850, 260500, 495700, 619625, 1239250, 2478500, 2582597, 5165194, 10330388, 12912985, 25825970, 51651940, 64564925, 129129850, 258259700, 322824625, 645649250, 1291298500]

約数ペア:

[(1, 1291298500), (2, 645649250), (4, 322824625), (5, 258259700), (10, 129129850), (20, 64564925), (25, 51651940), (50, 25825970), (100, 12912985), (125, 10330388), (250, 5165194), (500, 2582597), (521, 2478500), (1042, 1239250), (2084, 619625), (2605, 495700), (4957, 260500), (5210, 247850), (9914, 130250), (10420, 123925), (13025, 99140), (19828, 65125), (24785, 52100), (26050, 49570)]