20661795

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{89}}^1$

素因数の和:185

約数の個数: 96

約数和(自身を含む): 45826560

約数和(自身を除く): 25164765

約数列:

[1, 3, 5, 7, 9, 11, 15, 21, 33, 35, 45, 55, 63, 67, 77, 89, 99, 105, 165, 201, 231, 267, 315, 335, 385, 445, 469, 495, 603, 623, 693, 737, 801, 979, 1005, 1155, 1335, 1407, 1869, 2211, 2345, 2937, 3015, 3115, 3465, 3685, 4005, 4221, 4895, 5159, 5607, 5963, 6633, 6853, 7035, 8811, 9345, 11055, 14685, 15477, 17889, 20559, 21105, 25795, 28035, 29815, 33165, 34265, 41741, 44055, 46431, 53667, 61677, 65593, 77385, 89445, 102795, 125223, 196779, 208705, 232155, 268335, 308385, 327965, 375669, 459151, 590337, 626115, 983895, 1377453, 1878345, 2295755, 2951685, 4132359, 6887265, 20661795]

約数ペア:

[(1, 20661795), (3, 6887265), (5, 4132359), (7, 2951685), (9, 2295755), (11, 1878345), (15, 1377453), (21, 983895), (33, 626115), (35, 590337), (45, 459151), (55, 375669), (63, 327965), (67, 308385), (77, 268335), (89, 232155), (99, 208705), (105, 196779), (165, 125223), (201, 102795), (231, 89445), (267, 77385), (315, 65593), (335, 61677), (385, 53667), (445, 46431), (469, 44055), (495, 41741), (603, 34265), (623, 33165), (693, 29815), (737, 28035), (801, 25795), (979, 21105), (1005, 20559), (1155, 17889), (1335, 15477), (1407, 14685), (1869, 11055), (2211, 9345), (2345, 8811), (2937, 7035), (3015, 6853), (3115, 6633), (3465, 5963), (3685, 5607), (4005, 5159), (4221, 4895)]