12912985000

素因数分解:

$2^3\times 5^4\times {\mathrm{521}}^1\times {\mathrm{4957}}^1$

素因数の和:5504

約数の個数: 80

約数和(自身を含む): 30319310340

約数和(自身を除く): 17406325340

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 521, 625, 1000, 1042, 1250, 2084, 2500, 2605, 4168, 4957, 5000, 5210, 9914, 10420, 13025, 19828, 20840, 24785, 26050, 39656, 49570, 52100, 65125, 99140, 104200, 123925, 130250, 198280, 247850, 260500, 325625, 495700, 521000, 619625, 651250, 991400, 1239250, 1302500, 2478500, 2582597, 2605000, 3098125, 4957000, 5165194, 6196250, 10330388, 12392500, 12912985, 20660776, 24785000, 25825970, 51651940, 64564925, 103303880, 129129850, 258259700, 322824625, 516519400, 645649250, 1291298500, 1614123125, 2582597000, 3228246250, 6456492500, 12912985000]

約数ペア:

[(1, 12912985000), (2, 6456492500), (4, 3228246250), (5, 2582597000), (8, 1614123125), (10, 1291298500), (20, 645649250), (25, 516519400), (40, 322824625), (50, 258259700), (100, 129129850), (125, 103303880), (200, 64564925), (250, 51651940), (500, 25825970), (521, 24785000), (625, 20660776), (1000, 12912985), (1042, 12392500), (1250, 10330388), (2084, 6196250), (2500, 5165194), (2605, 4957000), (4168, 3098125), (4957, 2605000), (5000, 2582597), (5210, 2478500), (9914, 1302500), (10420, 1239250), (13025, 991400), (19828, 651250), (20840, 619625), (24785, 521000), (26050, 495700), (39656, 325625), (49570, 260500), (52100, 247850), (65125, 198280), (99140, 130250), (104200, 123925)]