20216918900

素因数分解:

$2^2\times 5^2\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{62533}}^1$

素因数の和:62661

約数の個数: 72

約数和(自身を含む): 45431951544

約数和(自身を除く): 25215032644

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 53, 61, 100, 106, 122, 212, 244, 265, 305, 530, 610, 1060, 1220, 1325, 1525, 2650, 3050, 3233, 5300, 6100, 6466, 12932, 16165, 32330, 62533, 64660, 80825, 125066, 161650, 250132, 312665, 323300, 625330, 1250660, 1563325, 3126650, 3314249, 3814513, 6253300, 6628498, 7629026, 13256996, 15258052, 16571245, 19072565, 33142490, 38145130, 66284980, 76290260, 82856225, 95362825, 165712450, 190725650, 202169189, 331424900, 381451300, 404338378, 808676756, 1010845945, 2021691890, 4043383780, 5054229725, 10108459450, 20216918900]

約数ペア:

[(1, 20216918900), (2, 10108459450), (4, 5054229725), (5, 4043383780), (10, 2021691890), (20, 1010845945), (25, 808676756), (50, 404338378), (53, 381451300), (61, 331424900), (100, 202169189), (106, 190725650), (122, 165712450), (212, 95362825), (244, 82856225), (265, 76290260), (305, 66284980), (530, 38145130), (610, 33142490), (1060, 19072565), (1220, 16571245), (1325, 15258052), (1525, 13256996), (2650, 7629026), (3050, 6628498), (3233, 6253300), (5300, 3814513), (6100, 3314249), (6466, 3126650), (12932, 1563325), (16165, 1250660), (32330, 625330), (62533, 323300), (64660, 312665), (80825, 250132), (125066, 161650)]