19904535

素因数分解:

$3^4\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{59}}^1$

素因数の和:107

約数の個数: 120

約数和(自身を含む): 44692560

約数和(自身を除く): 24788025

約数列:

[1, 3, 5, 7, 9, 15, 17, 21, 27, 35, 45, 49, 51, 59, 63, 81, 85, 105, 119, 135, 147, 153, 177, 189, 245, 255, 295, 315, 357, 405, 413, 441, 459, 531, 567, 595, 735, 765, 833, 885, 945, 1003, 1071, 1239, 1323, 1377, 1593, 1785, 2065, 2205, 2295, 2499, 2655, 2835, 2891, 3009, 3213, 3717, 3969, 4165, 4779, 5015, 5355, 6195, 6615, 6885, 7021, 7497, 7965, 8673, 9027, 9639, 11151, 12495, 14455, 15045, 16065, 18585, 19845, 21063, 22491, 23895, 26019, 27081, 33453, 35105, 37485, 43365, 45135, 48195, 49147, 55755, 63189, 67473, 78057, 81243, 105315, 112455, 130095, 135405, 147441, 167265, 189567, 234171, 245735, 315945, 337365, 390285, 406215, 442323, 568701, 737205, 947835, 1170855, 1326969, 2211615, 2843505, 3980907, 6634845, 19904535]

約数ペア:

[(1, 19904535), (3, 6634845), (5, 3980907), (7, 2843505), (9, 2211615), (15, 1326969), (17, 1170855), (21, 947835), (27, 737205), (35, 568701), (45, 442323), (49, 406215), (51, 390285), (59, 337365), (63, 315945), (81, 245735), (85, 234171), (105, 189567), (119, 167265), (135, 147441), (147, 135405), (153, 130095), (177, 112455), (189, 105315), (245, 81243), (255, 78057), (295, 67473), (315, 63189), (357, 55755), (405, 49147), (413, 48195), (441, 45135), (459, 43365), (531, 37485), (567, 35105), (595, 33453), (735, 27081), (765, 26019), (833, 23895), (885, 22491), (945, 21063), (1003, 19845), (1071, 18585), (1239, 16065), (1323, 15045), (1377, 14455), (1593, 12495), (1785, 11151), (2065, 9639), (2205, 9027), (2295, 8673), (2499, 7965), (2655, 7497), (2835, 7021), (2891, 6885), (3009, 6615), (3213, 6195), (3717, 5355), (3969, 5015), (4165, 4779)]