20015280

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{27799}}^1$

素因数の和:27818

約数の個数: 60

約数和(自身を含む): 67220400

約数和(自身を除く): 47205120

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720, 27799, 55598, 83397, 111196, 138995, 166794, 222392, 250191, 277990, 333588, 416985, 444784, 500382, 555980, 667176, 833970, 1000764, 1111960, 1250955, 1334352, 1667940, 2001528, 2223920, 2501910, 3335880, 4003056, 5003820, 6671760, 10007640, 20015280]

約数ペア:

[(1, 20015280), (2, 10007640), (3, 6671760), (4, 5003820), (5, 4003056), (6, 3335880), (8, 2501910), (9, 2223920), (10, 2001528), (12, 1667940), (15, 1334352), (16, 1250955), (18, 1111960), (20, 1000764), (24, 833970), (30, 667176), (36, 555980), (40, 500382), (45, 444784), (48, 416985), (60, 333588), (72, 277990), (80, 250191), (90, 222392), (120, 166794), (144, 138995), (180, 111196), (240, 83397), (360, 55598), (720, 27799)]