20805200

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{4001}}^1$

素因数の和:4032

約数の個数: 60

約数和(自身を含む): 53842908

約数和(自身を除く): 33037708

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 65, 80, 100, 104, 130, 200, 208, 260, 325, 400, 520, 650, 1040, 1300, 2600, 4001, 5200, 8002, 16004, 20005, 32008, 40010, 52013, 64016, 80020, 100025, 104026, 160040, 200050, 208052, 260065, 320080, 400100, 416104, 520130, 800200, 832208, 1040260, 1300325, 1600400, 2080520, 2600650, 4161040, 5201300, 10402600, 20805200]

約数ペア:

[(1, 20805200), (2, 10402600), (4, 5201300), (5, 4161040), (8, 2600650), (10, 2080520), (13, 1600400), (16, 1300325), (20, 1040260), (25, 832208), (26, 800200), (40, 520130), (50, 416104), (52, 400100), (65, 320080), (80, 260065), (100, 208052), (104, 200050), (130, 160040), (200, 104026), (208, 100025), (260, 80020), (325, 64016), (400, 52013), (520, 40010), (650, 32008), (1040, 20005), (1300, 16004), (2600, 8002), (4001, 5200)]