21517210

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{367}}^1$

素因数の和:439

約数の個数: 64

約数和(自身を含む): 46738944

約数和(自身を除く): 25221734

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 41, 55, 65, 82, 110, 130, 143, 205, 286, 367, 410, 451, 533, 715, 734, 902, 1066, 1430, 1835, 2255, 2665, 3670, 4037, 4510, 4771, 5330, 5863, 8074, 9542, 11726, 15047, 20185, 23855, 29315, 30094, 40370, 47710, 52481, 58630, 75235, 104962, 150470, 165517, 195611, 262405, 331034, 391222, 524810, 827585, 978055, 1655170, 1956110, 2151721, 4303442, 10758605, 21517210]

約数ペア:

[(1, 21517210), (2, 10758605), (5, 4303442), (10, 2151721), (11, 1956110), (13, 1655170), (22, 978055), (26, 827585), (41, 524810), (55, 391222), (65, 331034), (82, 262405), (110, 195611), (130, 165517), (143, 150470), (205, 104962), (286, 75235), (367, 58630), (410, 52481), (451, 47710), (533, 40370), (715, 30094), (734, 29315), (902, 23855), (1066, 20185), (1430, 15047), (1835, 11726), (2255, 9542), (2665, 8074), (3670, 5863), (4037, 5330), (4510, 4771)]