421747557

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^2\times {\mathrm{131}}^1\times {\mathrm{181}}^1$

素因数の和:351

約数の個数: 72

約数和(自身を含む): 728503776

約数和(自身を除く): 306756219

約数列:

[1, 3, 7, 11, 21, 33, 49, 77, 121, 131, 147, 181, 231, 363, 393, 539, 543, 847, 917, 1267, 1441, 1617, 1991, 2541, 2751, 3801, 4323, 5929, 5973, 6419, 8869, 10087, 13937, 15851, 17787, 19257, 21901, 23711, 26607, 30261, 41811, 47553, 65703, 70609, 71133, 97559, 110957, 153307, 165977, 211827, 260821, 292677, 332871, 459921, 497931, 776699, 782463, 1073149, 1161839, 1825747, 2330097, 2869031, 3219447, 3485517, 5477241, 8607093, 12780229, 20083217, 38340687, 60249651, 140582519, 421747557]

約数ペア:

[(1, 421747557), (3, 140582519), (7, 60249651), (11, 38340687), (21, 20083217), (33, 12780229), (49, 8607093), (77, 5477241), (121, 3485517), (131, 3219447), (147, 2869031), (181, 2330097), (231, 1825747), (363, 1161839), (393, 1073149), (539, 782463), (543, 776699), (847, 497931), (917, 459921), (1267, 332871), (1441, 292677), (1617, 260821), (1991, 211827), (2541, 165977), (2751, 153307), (3801, 110957), (4323, 97559), (5929, 71133), (5973, 70609), (6419, 65703), (8869, 47553), (10087, 41811), (13937, 30261), (15851, 26607), (17787, 23711), (19257, 21901)]