20465340

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{6961}}^1$

素因数の和:6987

約数の個数: 72

約数和(自身を含む): 66668112

約数和(自身を除く): 46202772

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 6961, 13922, 20883, 27844, 34805, 41766, 48727, 69610, 83532, 97454, 104415, 139220, 146181, 194908, 208830, 243635, 292362, 341089, 417660, 487270, 584724, 682178, 730905, 974540, 1023267, 1364356, 1461810, 1705445, 2046534, 2923620, 3410890, 4093068, 5116335, 6821780, 10232670, 20465340]

約数ペア:

[(1, 20465340), (2, 10232670), (3, 6821780), (4, 5116335), (5, 4093068), (6, 3410890), (7, 2923620), (10, 2046534), (12, 1705445), (14, 1461810), (15, 1364356), (20, 1023267), (21, 974540), (28, 730905), (30, 682178), (35, 584724), (42, 487270), (49, 417660), (60, 341089), (70, 292362), (84, 243635), (98, 208830), (105, 194908), (140, 146181), (147, 139220), (196, 104415), (210, 97454), (245, 83532), (294, 69610), (420, 48727), (490, 41766), (588, 34805), (735, 27844), (980, 20883), (1470, 13922), (2940, 6961)]