20971548

素因数分解:

$2^2\times 3^4\times {\mathrm{13}}^2\times {\mathrm{383}}^1$

素因数の和:425

約数の個数: 90

約数和(自身を含む): 59520384

約数和(自身を除く): 38548836

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 27, 36, 39, 52, 54, 78, 81, 108, 117, 156, 162, 169, 234, 324, 338, 351, 383, 468, 507, 676, 702, 766, 1014, 1053, 1149, 1404, 1521, 1532, 2028, 2106, 2298, 3042, 3447, 4212, 4563, 4596, 4979, 6084, 6894, 9126, 9958, 10341, 13689, 13788, 14937, 18252, 19916, 20682, 27378, 29874, 31023, 41364, 44811, 54756, 59748, 62046, 64727, 89622, 124092, 129454, 134433, 179244, 194181, 258908, 268866, 388362, 403299, 537732, 582543, 776724, 806598, 1165086, 1613196, 1747629, 2330172, 3495258, 5242887, 6990516, 10485774, 20971548]

約数ペア:

[(1, 20971548), (2, 10485774), (3, 6990516), (4, 5242887), (6, 3495258), (9, 2330172), (12, 1747629), (13, 1613196), (18, 1165086), (26, 806598), (27, 776724), (36, 582543), (39, 537732), (52, 403299), (54, 388362), (78, 268866), (81, 258908), (108, 194181), (117, 179244), (156, 134433), (162, 129454), (169, 124092), (234, 89622), (324, 64727), (338, 62046), (351, 59748), (383, 54756), (468, 44811), (507, 41364), (676, 31023), (702, 29874), (766, 27378), (1014, 20682), (1053, 19916), (1149, 18252), (1404, 14937), (1521, 13788), (1532, 13689), (2028, 10341), (2106, 9958), (2298, 9126), (3042, 6894), (3447, 6084), (4212, 4979), (4563, 4596)]